Hemi Metals, located in Hamilton, New Zealand, is a trusted manufacturer and supplier of Alloy Steel AISI 4340 Bars and Rods, designed for applications that require exceptional strength, toughness, and resistance to fatigue. This nickel-chromium-molybdenum alloy steel is celebrated for its remarkable hardenability and reliable performance under intense mechanical stress. Hemi Metals produces AISI 4340 Bars and Rods with precise dimensions, consistent composition, and a strong commitment to international quality standards. These products find extensive use in the aerospace, automotive, oil and gas, and heavy machinery industries. The company emphasizes durability, consistent performance, and material integrity for demanding engineering applications.
Alloy Steel AISI 4340 Bars and Rods consist of 0.38–0.43% carbon, 0.7–0.9% chromium, 1.65–2.0% nickel, 0.2–0.3% molybdenum, along with balanced amounts of manganese and silicon. This alloy is known for its impressive tensile strength, toughness, and fatigue resistance, particularly after undergoing quenching and tempering processes. AISI 4340 showcases excellent hardenability, good impact strength, and robust performance under high loads and shock conditions. It maintains mechanical stability across a range of temperatures and offers superior fatigue strength. Additionally, the alloy provides reasonable machinability in its annealed state while preserving durability when heat-treated.
| 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 are essential in industries that require components with extreme strength and high toughness, capable of withstanding heavy loads and severe stress. Aerospace manufacturers utilize 4340 for landing gear parts, aircraft bolts, shafts, and structural components. The automotive and motorsport sectors depend on it for crankshafts, axles, connecting rods, gears, and high-performance drivetrain components. In the oil and gas industry, 4340 is used for drill collars, wellhead components, high-pressure tools, and downhole equipment. It also plays a vital role in heavy machinery and power generation applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
Copyright 2024 Hemi Metals. All rights reserved
