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Alloy Steel Round Bar Grade


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Alloy Steel Round Bar is made up of different material grades such as A-182, F5, F9, F11, F12, F22 & F91. These are made up of various metal alloys that are corrosion resistant and strong. Navstar Steel is a leading supplier and manufacturer of these Alloy Steel Round Bar products. There are different compositions to the alloys and different specifications and standards. Alloy steel round bars are versatile materials used in various industries due to their exceptional mechanical properties and suitability for a wide range of applications. Alloy steel round bars are made from steel alloyed with various elements such as chromium, molybdenum, nickel, vanadium, or manganese. The specific alloying elements and their proportions determine the properties of the alloy steel, including hardness, toughness, corrosion resistance, and heat resistance. High Strength: Alloy steel round bars typically exhibit higher tensile and yield strengths compared to carbon steel. Hardness: Depending on the alloy composition and heat treatment, alloy steel round bars can achieve high hardness levels, making them suitable for wear-resistant applications. Toughness: Alloy steels often possess good toughness, which is crucial for withstanding impact and shock loading conditions. Corrosion Resistance: Some alloy steels are formulated to provide enhanced corrosion resistance, making them suitable for applications in aggressive environments. Heat Resistance: Certain alloy steel grades retain their mechanical properties at elevated temperatures, making them suitable for high-temperature applications such as forging, heat treatment, and aerospace components.


Alloy Steel Round Bar Grade



  • SCM415H: A low-alloy steel known for its high strength and toughness, commonly used in automotive and machinery parts subjected to high stress. SCM415H is a versatile and reliable low-alloy steel grade suitable for demanding applications where high strength, toughness, and wear resistance are essential. Its excellent combination of properties makes it a preferred choice in various industrial sectors.
    Applications: Due to its high strength, toughness, and excellent hardenability, SCM415H is widely used in various applications where high stress and wear resistance are required. It is commonly employed in the manufacturing of gears, shafts, axles, crankshafts, and other critical components in automotive, machinery, and construction industries. Chemical Composition: Typically contains carbon, manganese, chromium, and molybdenum.
    Mechanical Properties: High tensile strength, good toughness, and excellent hardenability.

  • SCM420H: Similar to SCM415H but with slightly higher carbon content, providing better hardenability and wear resistance.
    Applications: Due to its high strength, toughness, and excellent hardenability, SCM420H finds applications in various industries where components are subjected to high stress and wear conditions. It is commonly used in the manufacturing of gears, shafts, axles, crankshafts, and other critical components in automotive, machinery, and construction sectors. Chemical Composition: Similar to SCM415H but with a higher carbon content.
    Mechanical Properties: Enhanced hardenability and wear resistance compared to SCM415H.

  • SAE 8620H: A low-alloy steel with good core strength and toughness, often used in gears, shafts, and other parts requiring high strength and impact resistance.
    Applications: SAE 8620H is widely used in applications requiring high strength, toughness, and wear resistance. Common applications include gears, shafts, axles, crankshafts, and other components in automotive, aerospace, and machinery industries.
    Chemical Composition: Alloyed with elements such as nickel, chromium, and molybdenum.
    Mechanical Properties: High core strength and toughness, excellent impact resistance.

  • ASTM A105: A specification for carbon steel forgings for piping applications, typically used in high-temperature and high-pressure service environments.
    Applications: ASTM A105 forgings are commonly used for piping components in various industries, including oil and gas, petrochemical, and power generation. Typical applications include flanges, fittings, valves, and other piping components subjected to moderate temperatures and pressures.
    Chemical Composition: Carbon steel with specified chemical composition for piping applications.
    Mechanical Properties: Excellent ductility, toughness, and impact strength.

  • SAE 1018: Low-carbon steel known for its excellent weldability, machinability, and surface finish. Commonly used in various applications, including automotive components.
    SAE 1018 is a low-carbon steel grade known for its precise chemical composition, typically containing around 0.15-0.20% carbon, 0.60-0.90% manganese, and trace amounts of other alloying elements. Its low carbon content ensures excellent weldability and machinability while maintaining adequate strength and ductility.
    Chemical Composition: Low-carbon steel with specified chemical composition for good weldability and machinability.
    Mechanical Properties: Moderate strength, excellent weldability, and formability.
    Applications: Widely used in automotive components, bolts, studs, and general engineering applications

  • C10, C20: Non-alloy carbon steels with varying carbon content, suitable for different engineering applications depending on their strength and hardness requirements. Overall, C10 and C20 are economical and readily available carbon steels suitable for a wide range of low-stress engineering applications. Their simplicity in composition and processing makes them preferred choices for manufacturers seeking cost-effective solutions without compromising on qualit
    Chemical Composition: Non-alloyed carbon steel with low carbon content.
    Mechanical Properties: Moderate strength and good weldability.
    Applications: Commonly used in low-stress structural components, nuts, bolts, and general machinery parts.

  • ST52.3: A low-alloy high-strength structural steel known for its excellent weldability and impact resistance, commonly used in construction and machinery manufacturing.
    Due to its superior mechanical properties, ST52.3 is commonly used in construction, machinery manufacturing, and structural engineering projects. It is widely employed in the fabrication of welded structures, bridges, buildings, and machinery components subjected to high stress and dynamic loads. ST52.3 is also suitable for applications requiring excellent weldability and formability.
    Applications: Widely used in construction, machinery manufacturing, and structural engineering for welded structures, bridges, buildings, and machinery components subjected to high stress and dynamic loads.

  • S355J2, S355J2+N, S355JR: Structural steel grades with different variations in their properties, offering good weldability and toughness for construction and engineering applications.
    S355J2 ,S355J2+N, S355JR is a non-alloy structural steel with a precise chemical composition typically containing carbon, manganese, silicon, phosphorus, sulfur, and trace amounts of other elements. The exact composition may vary depending on manufacturing standards, but generally, it falls within specified ranges to ensure desired mechanical properties.
    Applications: Commonly used in construction, engineering, and manufacturing industries for structural components such as beams, columns, channels, and hollow sections. S355J2 is favored for its high strength-to-weight ratio and durability in demanding environments.

  • IS 2062: Indian standard specification for hot rolled medium and high tensile structural steel.
    Chemical Composition: Indian standard specification for hot rolled medium and high tensile structural steel.
    Mechanical Properties: Specifies minimum tensile strength, yield strength, and elongation requirements for various grades, ensuring structural integrity in construction applications.
    Applications: Used in structural applications such as bridges, buildings, and construction equipment in India and neighboring regions.

  • 1012, 1015: Low-carbon steels with good machinability and weldability, used in various manufacturing applications.
    Chemical Composition: Low-carbon steel with a composition containing approximately 0.10% carbon and trace amounts of other alloying elements.
    Mechanical Properties: Offers moderate strength and good machinability, suitable for applications requiring forming, bending, and welding.
    Applications: Used in automotive components, fasteners, and general engineering applications.
    Standards: May comply with various international standards such as SAE J403 or ASTM A29/A29M.

  • SAE1008, SAE1010, SAE1050, SAE1541, SAE1536, SAE 4130, SAE 4140, SAE 4145H, SAE 4150: Different grades of steel defined by the Society of Automotive Engineers (SAE) for specific applications in the automotive and machinery industries.
    Chemical Composition: This is a low-carbon steel grade with a maximum carbon content of 0.10%. It typically contains small amounts of manganese, phosphorus, sulfur, and other residual elements.
    Mechanical Properties: The offers relatively low tensile and yield strength, making it suitable for applications requiring good formability and weldability. Its mechanical properties are primarily influenced by its low carbon content.
    Applications: Commonly used in automotive panels, wire rods, and various cold-formed steel products where excellent formability and surface finish are required.
    Standards: Complies with SAE J403 standard specifications for carbon steels.
    These grades are alloy steel grades commonly used in the manufacturing of high-strength structural components, such as shafts, gears, and aerospace components. Each grade has its own unique chemical composition and mechanical properties tailored to specific applications. SAE 4130 is a chromium-molybdenum alloy steel, while SAE 4140, SAE 4145H, and SAE 4150 are chromium-molybdenum alloy steels with additional elements to enhance strength, toughness, and hardenability. These grades are typically supplied in quenched and tempered conditions to achieve the desired mechanical properties. They conform to SAE J404 standard specifications for alloy steels and are widely used in various industries, including aerospace, automotive, and machinery manufacturing.

  • EDD, EN2A, EN8, EN8D, EN8M, EN15, EN16, EN18, EN19, EN26, EN27, EN28, EN29B, EN30B, EN36C, EN42J: Various engineering grades of steel specified by European standards (EN), each with specific properties and applications.
    These grades are part of the EN (European Norm) standard specifications for various types of alloy and carbon steels. Each grade has its unique chemical composition, mechanical properties, and applications, tailored to specific industrial requirements. They are commonly used in automotive, aerospace, machinery, and construction industries for a wide range of applications, including gears, shafts, fasteners, and structural components. Specifications for these grades are defined by European standards organizations such as BSI (British Standards Institution) and DIN (Deutsches Institut für Normung).
    Applications: Used in general engineering applications such as shafts, bolts, nuts, and studs where good machinability and weldability are required.

  • UNS G10100: An unalloyed carbon steel grade specified by the Unified Numbering System (UNS), offering good machinability and weldability.
    UNS G10100 is a low-carbon, plain carbon steel grade known for its excellent machinability and weldability. It belongs to the SAE-AISI 1000 series of carbon steels, which are characterized by their relatively low carbon content, typically below 0.15%. UNS G10100 is often referred to as 1010 steel. Applications: Due to its excellent machinability and formability, UNS G10100 is commonly used in the production of cold-formed components, such as bolts, screws, nuts, washers, and bushings. It is also employed in the manufacturing of automotive parts, construction materials, and general engineering components.

  • 20MnV6: A low-alloy steel grade with high strength and good machinability, commonly used in the manufacturing of hydraulic cylinders.20MnV6 is a low-carbon, alloyed steel grade primarily known for its excellent mechanical properties, particularly its high strength and toughness. It is a versatile material commonly used in the manufacturing of mechanical components subjected to high stress and impact loads. 20MnV6 is often used in applications requiring high tensile strength, good weldability, and resistance to wear and fatigue.
    Applications: Due to its high strength, toughness, and wear resistance, 20MnV6 is commonly used in various industries, including automotive, aerospace, construction, and machinery manufacturing. It is particularly well-suited for applications such as hydraulic cylinders, piston rods, crankshafts, gears, and structural tubing. Its excellent machinability and weldability further enhance its versatility in manufacturing processes.

  • ASTM A106: A specification for seamless carbon steel pipe for high-temperature service.ASTM A106 is a seamless carbon steel pipe specification that covers seamless carbon steel pipes for high-temperature service. It is commonly used in pressure piping and boiler applications where elevated temperatures and high-pressure environments are present. ASTM A106 pipes are suitable for bending, flanging, and similar forming operations.
    Applications: ASTM A106 pipes are widely used in industries such as oil and gas, power generation, petrochemical, and refineries. They are commonly used for transporting fluids and gases at high temperatures and pressures. Typical applications include steam pipelines, boiler tubes, heat exchangers, and superheaters.

  • 42CrMo4: This is a high-strength, versatile, and commonly used alloy steel known for its excellent mechanical properties, including high tensile strength and toughness. It contains chromium and molybdenum, which contribute to its strength and hardenability. 42CrMo4 is often used in applications requiring high strength and fatigue resistance, such as gears, shafts, and automotive components.

  • 34CrMo4: Similar to 42CrMo4, this alloy steel also contains chromium and molybdenum, but in slightly lower concentrations. It offers good hardenability, high strength, and excellent impact resistance. 34CrMo4 is frequently used in the manufacturing of cylinders, crankshafts, and other components subjected to high stress and pressure.

  • 25CrMo4: Another chromium-molybdenum alloy steel, 25CrMo4 possesses good strength, toughness, and wear resistance properties. It is often employed in applications requiring high fatigue strength and impact resistance, such as bicycle frames, crankshafts, and machinery components.

  • 30CrNiMo8: This alloy steel grade contains chromium, nickel, and molybdenum, offering high tensile strength, toughness, and good hardenability. 30CrNiMo8 is commonly utilized in the manufacturing of heavy-duty gears, shafts, and high-strength bolts subjected to high levels of stress and wear.

  • 17CrNiMo6: Known for its excellent combination of toughness and high core strength, 17CrNiMo6 is a low-alloy steel grade featuring chromium, nickel, and molybdenum. It is frequently used in applications requiring high load-bearing capacity and impact resistance, such as gears, crankshafts, and axles.

  • 34CrNiMo6: Similar to 17CrNiMo6 but with a higher chromium content, this alloy steel grade offers enhanced hardenability and wear resistance. It is commonly employed in the manufacturing of heavy-duty gears, shafts, and components subjected to high levels of stress, such as in the aerospace and automotive industries.

  • 42CrMo4: This is a high-strength, versatile, and commonly used alloy steel known for its excellent mechanical properties, including high tensile strength and toughness. It contains chromium and molybdenum, which contribute to its strength and hardenability. 42CrMo4 is often used in applications requiring high strength and fatigue resistance, such as gears, shafts, and automotive components.

  • 34CrMo4: Similar to 42CrMo4, this alloy steel also contains chromium and molybdenum, but in slightly lower concentrations. It offers good hardenability, high strength, and excellent impact resistance. 34CrMo4 is frequently used in the manufacturing of cylinders, crankshafts, and other components subjected to high stress and pressure.

  • 25CrMo4: Another chromium-molybdenum alloy steel, 25CrMo4 possesses good strength, toughness, and wear resistance properties. It is often employed in applications requiring high fatigue strength and impact resistance, such as bicycle frames, crankshafts, and machinery components.

  • 30CrNiMo8: This alloy steel grade contains chromium, nickel, and molybdenum, offering high tensile strength, toughness, and good hardenability. 30CrNiMo8 is commonly utilized in the manufacturing of heavy-duty gears, shafts, and high-strength bolts subjected to high levels of stress and wear.

  • 17CrNiMo6: Known for its excellent combination of toughness and high core strength, 17CrNiMo6 is a low-alloy steel grade featuring chromium, nickel, and molybdenum. It is frequently used in applications requiring high load-bearing capacity and impact resistance, such as gears, crankshafts, and axles.

  • 34CrNiMo6: Similar to 17CrNiMo6 but with a higher chromium content, this alloy steel grade offers enhanced hardenability and wear resistance. It is commonly employed in the manufacturing of heavy-duty gears, shafts, and components subjected to high levels of stress, such as in the aerospace and automotive industries.

  • BS 970 709 M40: British Standard specifying a medium carbon steel grade suitable for applications requiring high tensile strength and good wear resistance. BS 970 709M40 is a British Standard specification for a medium carbon steel grade that is commonly used in engineering and manufacturing applications. Let's break down the information about this gradeBS 970 709M40 is a British Standard specification for a medium carbon steel grade that is commonly used in engineering and manufacturing applications. Let's break down the information about this grade

  • EN353: EN353 is a low-alloy steel grade that falls under the European standard EN 10083, which specifies technical delivery conditions for alloy steels. Here's some information about EN353
    EN353 is known for its excellent hardenability, high strength, and good wear resistance. These properties make it well-suited for applications where components need to withstand high levels of stress, wear, and fatigue. EN353 can be heat treated to achieve different mechanical properties, such as high tensile strength and hardness, depending on the requirements of the application.

  • SAE 4340:SAE 4340 is a high-strength, low-alloy steel grade that is part of the SAE (Society of Automotive Engineers) steel grade designation system. Here's some information about SAE 4340:

  • CrMoV5-7 : is a chromium-molybdenum-vanadium alloy steel grade used primarily in the manufacture of pressure vessels and piping components for high-temperature and high-pressure applications in industries such as petrochemical, chemical, and power generation. Here's some information about this grade.This grade exhibits excellent high-temperature strength, creep resistance, and resistance to hydrogen attack, making it suitable for use in environments where elevated temperatures and pressures are present. It offers good hardenability and toughness, allowing it to withstand the stresses associated with pressure vessel applications.

    H13 : H13 is a widely-used hot work tool steel known for its excellent combination of high temperature strength, toughness, and resistance to thermal fatigue. Here's some information about this grade. H13 tool steel is characterized by its high carbon content along with significant amounts of chromium, molybdenum, vanadium, and sometimes tungsten. The exact composition may vary slightly depending on the manufacturer, but typically it contains around 0.40-0.55% carbon, 4.75-5.50% chromium, 1.10-1.75% molybdenum, 0.80-1.20% vanadium, and smaller amounts of other alloying elements.

  • H11Hardox 500 : H11 tool steel and Hardox 500 abrasion-resistant steel. While such a specific alloy might not exist as a standardized grade, I can provide some general information on the properties and potential applications of such a material:H11 tool steel is specifically designed for high-temperature applications requiring resistance to thermal fatigue, while Hardox 500 is an abrasion-resistant steel used in applications requiring excellent wear resistance and structural strength. Each grade serves different purposes and is chosen based on the specific requirements of the application.

  • EN1A :EN1A is a low carbon-manganese steel often used for general engineering purposes due to its excellent machinability. EN1A steel typically contains around 0.07-0.15% carbon and 0.80-1.20% manganese. It may also contain small amounts of sulfur and phosphorus as impurities. The low carbon content contributes to its excellent machinability, while manganese enhances its hardenability and strength.
    Applications: EN1A steel is commonly used for the manufacture of small turned components, such as bolts, nuts, studs, bushings, and fittings, where high-speed machining and excellent surface finish are essential. It finds applications in automotive, aerospace, and general engineering industries for parts that require good machinability, such as shafts, pins, spindles, and gears.

  • EN1A LEADED :EN1A Leaded steel typically contains around 0.15-0.25% carbon, 0.80-1.20% manganese, and a small amount of sulfur and phosphorus as impurities. Additionally, it contains a lead additive, usually around 0.15-0.35%, which enhances its machinability by improving chip formation and reducing tool wear.

  • 9SMnPb30 :9SMnPb30 steel typically contains around 0.17-0.23% carbon, 1.2-1.5% manganese, 0.15-0.35% sulfur, 0.15-0.35% lead, and small amounts of phosphorus and other elements. The addition of lead and sulfur contributes to its superior machinability by promoting the formation of short, broken chips during machining.9SMnPb30 is commonly used in the manufacturing of small turned components and intricate parts, such as bolts, nuts, screws, shafts, and fittings, where excellent machinability and dimensional accuracy are essential. It finds applications in automotive, aerospace, and general engineering industries for parts that require high-speed machining operations and superior surface finish.

  • 11SMnPb28K: 11SMnPb28K is a free-cutting, leaded, and sulfur-containing steel grade known for its excellent machinability.11SMnPb28K steel typically contains around 0.11-0.15% carbon, 1.30-1.70% manganese, 0.15-0.35% sulfur, 0.20-0.40% lead, and small amounts of phosphorus and other elements. The addition of lead and sulfur promotes the formation of short, broken chips during machining, enhancing machinability. 11SMnPb28K steel conforms to various international standards such as DIN EN 10277-3 (Europe) or ASTM A29 (United States). Compliance with these standards ensures that the material meets specified requirements for chemical composition, mechanical properties, and other relevant characteristics.

  • AISI 1144 AISI 1144 is a carbon-manganese free-cutting steel known for its excellent machinability and good strength. AISI 1144 steel typically contains around 0.40-0.48% carbon, 1.35-1.65% manganese, and small amounts of other elements such as sulfur, phosphorus, and silicon. The controlled addition of sulfur promotes the formation of manganese sulfide inclusions, which aid in chip breaking during machining, enhancing machinability. AISI 1144 finds widespread use in the manufacturing industry, particularly for small turned components and intricate parts. It is commonly used for bolts, nuts, screws, shafts, fittings, and other similar applications where excellent machinability and dimensional accuracy are essential. It is also employed in various sectors such as automotive, aerospace, and general engineering, where parts require high-speed machining operations and superior surface finish.

  • AISI 1136AISI 1136 is a low-carbon, manganese-containing steel grade known for its versatility and suitability for various engineering applications. AISI 1136 steel typically contains approximately 0.32-0.39% carbon, 0.70-1.00% manganese, and small amounts of other alloying elements such as silicon and phosphorus. The relatively low carbon content provides good weldability and machinability, while manganese contributes to hardenability and strength. AISI 1136 steel finds applications in various industries such as automotive, construction, and machinery manufacturing. It is commonly used for components and parts requiring moderate strength, toughness, and weldability. Typical applications include shafts, gears, bolts, studs, and other mechanical components where a balance of properties is needed.

  • 36SMnPb1436SMnPb14 is a free-cutting, leaded, and sulfur-containing steel grade known for its excellent machinability. 36SMnPb14 steel typically contains around 0.32-0.39% carbon, 1.3-1.6% manganese, 0.15-0.35% sulfur, 0.15-0.35% lead, and small amounts of phosphorus and other elements. The addition of lead and sulfur promotes the formation of short, broken chips during machining, enhancing machinability.
    36SMnPb14 finds widespread use in the manufacturing industry, particularly for small turned components and intricate parts. It is commonly used for bolts, nuts, screws, shafts, fittings, and other similar applications where excellent machinability and dimensional accuracy are essential. It is also employed in various sectors such as automotive, aerospace, and general engineering, where parts require high-speed machining operations and superior surface finish.

  • 36SMnPb14+C36SMnPb14+C steel typically contains around 0.32-0.39% carbon, 1.3-1.6% manganese, 0.15-0.35% sulfur, 0.15-0.35% lead, and small amounts of phosphorus and other elements. The "+C" designation may signify a controlled carbon content or a specific carbon addition for enhanced properties.
    Similar to standard 36SMnPb14, 36SMnPb14+C is commonly used for manufacturing small turned components and intricate parts in various industries. Applications include bolts, nuts, screws, shafts, fittings, and other parts where excellent machinability and dimensional accuracy are crucial. The specific properties of 36SMnPb14+C may make it suitable for applications requiring enhanced machinability or specific mechanical properties, such as high-speed machining operations or components subjected to dynamic loads.

  • 38SMn28 38SMn28 is a low-carbon, manganese-containing steel grade known for its excellent machinability and moderate strength. 38SMn28 steel typically contains approximately 0.36-0.44% carbon, 1.30-1.60% manganese, and small amounts of other alloying elements such as silicon and phosphorus. The controlled addition of manganese contributes to hardenability and strength, while the low carbon content enhances weldability and machinability.
    38SMn28 steel finds applications in various industries such as automotive, construction, and machinery manufacturing. It is commonly used for components and parts requiring moderate strength, toughness, and machinability. Typical applications include shafts, gears, bolts, studs, and other mechanical components where a balance of properties is needed.

  • 12L14 :The lower carbon content of 12L14 steel, especially the low melting point lead particles, ensures inherent lubrication of the steel during machining and embrittlement of the liquid metal at low machining speeds, thus avoiding the formation of Built-Up-Edge (BUE). In addition, phosphorus and sulfide inclusions form sources of stress concentration and discontinuities in the ferrite substrate, resulting in breakable chips. The sulfide-lubricated zone formed during machining reduces friction and tool wear, further improving its machinability. All these properties combine to make this material the most machinable of all common carbon and alloy steels. This machinability can be evaluated in terms of low cutting forces and good chip breaking characteristics.

  • AISI 1141: SAE-AISI 1141 steel is a resulfurized carbon steel formulated for primary forming into wrought products. 1141 is the designation in both the SAE and AISI systems for this material. G11410 is the UNS number. The properties of SAE-AISI 1141 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare SAE-AISI 1141 steel to: wrought resulfurized carbon steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

  • 9SMnPb289SMnPb28 is a lead alloyed free-cutting steel. It is usually being used for mass-produced parts. equivalent to Chinese standard Y15 , is an S-P composite high sulfur, low silicon free cutting steel. Machinability significantly higher than Y12, production efficiency than Y12 steel increased by 30 ~ 50%, especially tapping, tap life than Y12 more than doubled, commonly used in the manufacture of important standard parts, such as bolts, nuts, Spring seat and so on. 9SMnPb28 is a free-cutting structural steel. Free-cutting structural steel is abbreviated as free-cutting steel, which contains a small amount of free-cutting elements and has good cutting performance. Free-cutting structural steel is a kind of steel that uses certain elements in steel to improve the cutting performance of steel and is suitable for high-speed cutting on automatic machine tools. Commonly used elements to improve machinability are S, Pb, Ca, etc. Among them, S is the most commonly used. S forms MnS inclusions in steel. MnS is very brittle and has a certain lubricating effect. Therefore, the chips are easy to break, and the surface of the workpiece has a high smoothness. Reduce tool wear and increase cutting speed.

  • 4340 ROUND BARAISI 4340 Round Bar is a popular alloy steel that’s commonly used in various applications across different industries, from aerospace to oil and gas. It’s revered for its excellent strength, toughness, and wear-resistance properties that make it ideal for high-stress applications. If you’re considering using the AISI 4340 round bar for your project, this comprehensive guide will provide you with all the information you need to make an informed decision.
    AISI 4340 Round Bar is a heat-treated and tempered Chromoly steel alloy that is used in a variety of industrial applications. It boasts excellent strength, toughness, and fatigue resistance while also remaining ductile in areas subject to high stresses. AISI 4340 also has excellent welding characteristics, making it perfect for fabrication projects involving machining operations. With its impressive combination of properties, the AISI 4340 Round Bar can be found in aerospace components as well as automotive components demanding reliability and maximum performance.

  • 1.2714 Rounds/blocks :Flotech Metal Alloys Stocks and Supplies Die Block Steel DB6 / DIN 2714 in India and abroad. DB6 tool steel is an extreme pass on steel with high treating resistance and great through-solidifying properties. Its nickel substance has it uncommonly effect safe – a highly recommendable element for vast mallet & press bites the dust alike. This evaluation is generally supplied in toughened condition or extinguished and tempered to 1300 N/mm² & a working hardness of 370 to 410 HB (round) or 355 to 400 HB (square, level). Utilized as standard die block steel for manufacturing passes on of different kinds, press bites the dust, expulsion kicks the bucket, retainer plates, heavily clad trim bites the dust, hot shear sharpened pieces of steels and instrument holder.The exceptional hot work pre-solidified tool steel has great toughness and high wear resistance. DB6 die steel is generally provided in hard, quenched, tempered and annealed condition in strengthened condition in exceptional cases. Normally it’s working hardness is 360-430 BHN. This steel grade is the updated type of DIN 2713 for higher efficiency and performance.

  •  52100 / En31 / K-310.EN31 Alloy Steel is a high carbon, chromium containing low alloy steel that is through hardening and noted in particular for use as bearings. AISI 52100 has an excellent high carbon alloy steel which provides a high level of hardness with compressive strength and abrasion resistance. This grade of alloy steel is quite regularly utilized for wear resisting machine constituents and for press instruments.

  • H13 / 1.2344 Rounds & Flats/Blocks.AISI H13 steel is a 5% Cr ultra-high strength tool steel alloy with higher content of molybdenum and vanadium. Molybdenum provides excellent toughness and high hardenability; Vanadium results in a higher degree of dispersion of the hard vanadium carbides, resulting in higher wear resistance. H13 tool steel is a secondary hardening steel. It has good tempering resistance, good thermal fatigue resistance, and excellent heat cracking resistance, and maintains high hardness and strength at elevated temperatures. It is deep hardening and has a very high toughness, which allows hardening of large sections by air cooling.

  • H13 Imported Rolled Flats.H13 Bars Tool steel also known as AISI H13 steel or just H13 is a tool steel grade standardised for hot working. The main feature of this grade is the combination of alloyed elements of chromium, molybdenum and vanadium, Cr-Mo-V, which provides a high wear resistance to thermal shock. It is well known as for its great strength, and heat resistance. It is heavily used for die casting and the cold heading field. The presence of high vanadium in DIN 1.2344 can handle the abrasion at both low and high temperatures. It always provides a uniform and high level of machinability. This tool steel is mostly used for aluminum, magnesium and zinc die casting.

  • D3 / 1.2080 Rounds. 1.2080 X210Cr12 AISI D3 is an air hardening, high carbon high chromium, alloy tool steel with excellent resistance to abrasion and wear. 1.2080 X210Cr12 has good through hardening characteristics combined with dimensional stability with high resistance to tempering. 1.2080 AISI D3 is an oil hardening, high carbon/chromium type tool steel with very high wear resistance. It hardens with a very slight change in size. The alloy possesses very high compressive strength and is deep hardening.Cutting tools, stamping, woodworking, drawing, deep drawing and pressing tools, cold working rolls, measuring tools. Forging: Heat slowly and uniformly to 700°C then more rapidly to 900/1050°C. After forging cool slowly, preferably in a furnace.

  • D3 / 1.2080 FLATS AISI D3 cold work steel, also know as DIN 1.2080 (Werkstoff) and JIS SKD1, is a 12% chrome alloy steel. D3 cold work steel has very high wear resistance against abrasive and adhesive wear due to the high volume of hard carbides in the steel matrix, medium toughness, dimensionally stable, high compressive strength, not secondary hardenable. Type AISI D3 cold works tool steel is oil-quenched; though small sections can be gas quenched after austenitization using vacuum. As a result, tools made with type D3 cold work tool steel tend to be brittle during hardening. Type D2 tool steel is the most commonly used steel among the group D steels. The D3 cold work steels contain 1.5 to 2.35% of carbon and 12% of chromium.

  • En24 Rounds.EN24 is a 1.5% nickel, 1% chromium, 0.2% molybdenum alloy steel which has a long history dating back over 100 years. EN24 can be heat treated to a wide range of tensile strengths from 850-1000 N/mm² (‘T’ condition) up to 1550 N/mm² (‘Z’ condition). Heat treated EN24 offers high tensile strength combined with good ductility and resistance to shock. At low temperatures good impact values can be obtained. In this blog we explain a little about the characteristics and history of this well established steel grade.

  • D2 KNL / Cr12MoV Rounds.The D series of the cold-work class of tool steels, which originally included types D2, D3, D6, and D7, contains between 10% and 13% chromium (which is unusually high). These steels retain their hardness up to a temperature of 425 °C (797 °F). Common applications for these tool steels include forging dies, die-casting die blocks, and drawing dies D2 steel Round Bar is an air hardening, high-carbon, high-chromium tool steel. It has high wear and abrasion resistant properties. It is heat treatable and will offer a hardness in the range 55-62 HRC, and is machinable in the annealed condition. D2 steel shows little distortion on correct hardening. D2 steel’s high chromium content gives it mild corrosion resisting properties in the hardened condition.

  • D2 Knl / Cr12MoV Rolled & Forged Flats.D2, also known as Cr12MoV, is a high-carbon, high-chromium cold-work tool steel. It offers excellent wear resistance, toughness, and edge retention, making it suitable for applications such as blanking dies, forming dies, and shear blades. The "KNL" designation may refer to a specific manufacturer's proprietary designation or a particular production process.

  • Cr12MoV Rolled Flats container Shipped Packing List .These are flat bars made from D2 (Cr12MoV) steel through both rolling and forging processes. Rolling and forging impart different properties to the steel, with rolling typically providing better dimensional accuracy and surface finish, while forging enhances the material's strength and toughness. These flats are commonly used in the manufacturing of various cutting tools, punches, and dies where high wear resistance and good toughness are required.

  • D2 / 1.2379 Imported FLATS (Rolled & Forged).D2 steel, also known as 1.2379, is a high-carbon, high-chromium cold-work tool steel with similar properties to Cr12MoV. The "imported" designation indicates that the steel flats have been sourced from a foreign supplier. These flats undergo both rolling and forging processes, similar to the previous entry, to achieve the desired shape and properties.

  • D2 / 1.2379 ROUNDS.These are round bars made from D2 (1.2379) steel. D2 rounds are commonly used in applications such as cutting tools, punches, and dies where high wear resistance and good dimensional stability are required. The 1.2379 designation refers to the AISI/ASTM standard for this steel grade.

  • 1.2311 (P20): This is a pre-hardened plastic mold steel, often used for large molds requiring high tensile strength and good polishability. It offers good machinability and weldability, making it suitable for various mold applications. Typically used for making injection molds for plastic products.

  • >1.2738 (P20+Ni): Also known as P20+Ni, this is a modified version of P20 steel with added nickel. The addition of nickel enhances toughness, making it suitable for larger plastic molds and high-demanding applications. It provides good polishability, machinability, and dimensional stability.

  • 1.2083 (420): This is a stainless plastic mold steel with high wear resistance and good corrosion resistance. Widely used for making transparent parts, optical parts, and medical products due to its excellent polishability. It can be hardened to a high degree, making it suitable for applications requiring high surface finish and dimensional stability.

  • 1.2316 (420 Mod): Similar to 1.2083, 1.2316 is a modified stainless plastic mold steel with better corrosion resistance and polishability. It contains higher chromium content for improved wear resistance and hardness. Used for making molds for corrosive plastics or applications requiring high surface finish and corrosion resistance.

  • 1.2085 (420FM): This is a free-machining stainless plastic mold steel, suitable for applications where good machinability is essential. It offers moderate corrosion resistance and can be hardened for increased wear resistance. Commonly used for parts that require frequent machining operations or intricate designs in plastic molding processes.


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