Starc Metals, located in Canberra, Australia, has earned a solid reputation as a reliable manufacturer and supplier of top-notch Alloy Steel AISI 4140 Bars and Rods. With a strong focus on engineering excellence and ensuring customer satisfaction, they provide precision-engineered products that cater to a wide range of industrial applications. The AISI 4140 alloy steel bars and rods they offer are celebrated for their exceptional strength, durability, and performance even in high-stress environments. Serving industries like automotive, aerospace, oil & gas, and machinery, Starc Metals blends cutting-edge manufacturing techniques with rigorous quality standards to deliver dependable and cost-effective steel solutions throughout Australia and beyond.
The Alloy Steel AISI 4140 Bars and Rods are primarily made up of chromium, molybdenum, and manganese, creating a well-rounded mix of strength and toughness. Their typical composition features Carbon (0.38–0.43%), Chromium (0.8–1.1%), Manganese (0.75–1.0%), and Molybdenum (0.15–0.25%). This alloy is known for its excellent fatigue strength, high tensile strength (around 655 MPa in an annealed state), and good wear resistance. It holds up well under high pressure and temperature, and can be heat treated to boost hardness. Its machinability and weldability make it a great fit for high-performance industrial applications.
| Dimensions | : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Size | : | 5 mm To 500 mm |
| Diameter | : | 0.1 mm to 100 mm |
| Length | : | 100 mm To 3000 mm Long & Above |
| Finish | : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Tolerance | : | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Form | : | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
| Grade | C | Mn | Si | P | S | Fe | Mo | Ni | Cr |
| AISI / SAE 4140 | 0.38-0.43 | 0.75-1.00 | 0.20-0.35 | 0.035 max | 0.035 MAX | – | – | 0.15-0,25 | 0.80-1.10 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.85 g/cm3 | 1432 ℃ | 560 | 460 | 21.50% |
Alloy Steel AISI 4140 Bars and Rods are known for their excellent strength, toughness, and wear resistance. With a chemical composition that includes chromium and molybdenum, they offer improved hardness, fatigue resistance, and good machinability, making them ideal for demanding applications.
AISI 4140 Bars and Rods are commonly used in automotive, aerospace, oil and gas, construction, and heavy machinery industries. They are ideal for manufacturing parts such as gears, shafts, crankshafts, and axles that require high strength and durability.
Yes, Alloy Steel AISI 4140 Bars and Rods can be heat treated to achieve desired mechanical properties. Heat treatment processes such as quenching and tempering can increase hardness, strength, and toughness, making the material suitable for high-stress applications.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | EN |
| AISI / SAE 4140 | 1.7225 | G41400 | SCM 440 | BS 708M40 | 1.7223 |
Alloy Steel AISI 4140 Bars and Rods find extensive use in industries that require high strength, wear resistance, and toughness. They are commonly used in the production of automotive components like drive shafts, gears, and axles; aerospace parts; oil and gas tools; and heavy-duty machine components. Thanks to its hardenability and fatigue resistance, it’s perfect for parts that face high stress and impact. In construction and mining equipment, AISI 4140 guarantees a long service life and reliability. Its versatility in heat treatment and machining processes makes it a go-to material for both custom and mass-production settings.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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