Travis Steel, based in Canberra, Australia, stands out as a leading manufacturer and supplier of high-performance Alloy Steel AISI 4140 Bars. These bars are celebrated for their remarkable strength, toughness, and versatility. The company is dedicated to providing precision-engineered products that adhere to strict international quality standards. Travis Steel’s AISI 4140 Bars are crafted for demanding applications in various sectors, including automotive, oil and gas, mechanical, and construction industries. Thanks to their excellent heat treatment response and fatigue resistance, these bars ensure outstanding reliability, dimensional accuracy, and durability, making them a top choice for both high-stress and general engineering applications, not just in Australia but around the globe.
Alloy Steel AISI 4140 Bar is a chromium-molybdenum low-alloy steel, typically composed of 0.38–0.43% carbon, 0.75–1.00% chromium, 0.15–0.25% molybdenum, and 0.70–1.00% manganese. This unique blend grants it superior hardenability, strength, and wear resistance. On the mechanical side, it boasts a high tensile strength of about 655 MPa and a yield strength of around 415 MPa, along with excellent toughness and good ductility. The material also showcases impressive machinability and can be effectively heat-treated to enhance performance and extend service life in high-stress environments.
Diameter :Â 8mm-3000mm
Length :Â 3,000-10,000mm
Finish :Â Bright, Polish & Black
Condition :Â Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished
Form :Â Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.
| Grade | C | Cr | Si | S | Mn | P | Mo | |
| AISI 4140 | min. | 0.38 | 0.8 | 0.15 | – | 0.75 | – | 0.15 |
| max. | 0.43 | 1.10 | 0.35 | 0.04 | 1.00 | 0.04 | 0.25 | |
| Grade | Tensile Strength (ksi) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (ksi) min | Hardness |
| AISI 4140 | 855 | 20 | 621 | 197 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | UNS | WERKSTOFF NR. |
| AISI 4140 | G41400 | 1.7225 |
Alloy Steel AISI 4140 Bars find extensive use in industries like automotive, oil and gas, mining, and mechanical engineering. They are perfect for crafting shafts, gears, connecting rods, crankshafts, drill collars, and machinery components that require high strength and fatigue resistance. Their ability to maintain mechanical properties across varying temperatures makes them ideal for heavy-duty and high-torque applications. Moreover, AISI 4140 Bars are highly regarded in power transmission, tooling, and construction equipment for their durability, dimensional stability, and resistance to wear and impact.
Travis Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Canberra, Australia.
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