Neil Metals, located in Kolkata, India, stands out as a top manufacturer and supplier of high-quality Alloy Steel AISI 4340 Bars and Rods. Renowned for their precision engineering and commitment to global standards, this company provides products that cater to a wide range of industrial needs. With state-of-the-art production facilities and a talented workforce, Neil Metals ensures that their 4340 alloy steel offerings boast exceptional strength, durability, and precise dimensions. Their dedication to quality and on-time delivery has built them a strong reputation among clients in the automotive, aerospace, and heavy machinery sectors, both in India and around the world.
Alloy Steel AISI 4340 Bars and Rods are primarily made up of nickel, chromium, and molybdenum, with carbon, manganese, silicon, and iron forming the foundation. This distinctive blend gives the alloy impressive toughness and fatigue resistance. The mechanical properties are noteworthy, featuring a tensile strength of about 930 MPa, a yield strength of 745 MPa, and remarkable hardenability. With good ductility and wear resistance, 4340 steel can be heat-treated to enhance its performance. These characteristics make it perfect for demanding engineering applications that require strength and reliability under high stress.
| Sizes | 2-100mm A/F |
|---|---|
| Tolerance | H9, H8, H10, K12, H13K9, K10, H11, H12, K11 |
| Round bar Sizes | Diameter: 3-~800mm |
| Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged, Rod |
| Processing | Bar cutting to 650mm |
| Surface | Bright, Hot Rolled Pickled, Sand Blasting Finished, Hairline, Cold Drawn, Polished suppliers |
| Condition | Hardened and tempered, annealed |
| Form | Precision Square, Ingot, T-Bar, Rod, Round, Welding Rod, I/H Bar, Flat Bar, Blocks, Rings, Rectangle, Hex (A/F), Hollow, Threaded, Profiles, Ground Bar, Channel Bar, Billet, Triangle, Round Rod, Half Round Bar, Forging etc. |
| Square bar Sizes | 4 to 100mm |
| Finish | Hot rolled annealed, Bright, smooth turned, Polish, Rough Turned, Cold (bright) drawn, centreless ground, Grinding, peeled, hot rolled, slit rolled edge, Centreless Ground & Black. |
| Flat bar Sizes | Width: 10 – 500 millimeter Thick.: 2 to 100 millimeter |
| Element | Composition |
|---|---|
| C% | 0.38/0.43 |
| Mn% | 0.60/0.80 |
| P% | 0.035 max |
| S% | 0.040 max |
| Si% | 0.20/0.35 |
| Ni% | 1.65/2.00 |
| Cr% | 0.70/0.90 |
| Mo% | 0.20/0.30 |
| Property | Value |
|---|---|
| Tensile Strength | 850-1000 N/mm 2 |
| Elongation | 13% |
| Hardness | 250-350 HB |
Alloy Steel AISI 4340 is commonly used in aerospace, automotive, and heavy machinery applications due to its excellent strength, toughness, and fatigue resistance. It's ideal for manufacturing shafts, gears, and structural components.
AISI 4340 offers high tensile strength, excellent toughness, and good wear resistance. It is known for its ability to withstand high-stress and high-impact conditions.
Yes, AISI 4340 can be heat-treated to enhance its hardness and strength, making it highly adaptable for different engineering requirements.
Alloy Steel AISI 4340 Bars and Rods find extensive use in industries that require high strength and toughness. Common applications include the production of aircraft landing gear, automotive crankshafts, transmission components, and heavy-duty gears. Their outstanding fatigue resistance and impact strength make them ideal for structural parts that face high stress. Additionally, these rods are utilized in oil and gas drilling equipment, defense machinery, and high-performance motorsport components. The alloy’s ability to maintain its mechanical integrity in extreme conditions makes it a go-to choice for critical engineering applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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