Aiman Metals is a well-respected manufacturer and supplier based in Kuala Lumpur, Malaysia, specializing in top-notch Alloy Steel AISI 4140 Bars and Rods designed for high-performance engineering and industrial uses. These bars and rods are celebrated for their remarkable strength, toughness, and resistance to wear, making them a go-to choice for components that face heavy loads, impacts, and abrasion. At Aiman Metals, we take pride in crafting these bars and rods to exact specifications with a superior surface finish, ensuring they meet international quality standards. Available in a variety of sizes, lengths, and heat-treated conditions, our AISI 4140 Bars and Rods promise reliable performance even in the toughest environments.
Alloy Steel AISI 4140 Bars and Rods are made from chromium-molybdenum steels that contain around 0.38–0.43% carbon, 0.75–1.00% manganese, 0.80–1.10% chromium, and 0.15–0.25% molybdenum, along with trace amounts of silicon and sulfur. This unique blend provides a well-rounded mix of hardness, strength, and toughness. Typically, their mechanical properties include a tensile strength ranging from 655 to 1080 MPa, a yield strength of about 415 to 930 MPa, and outstanding fatigue resistance, which can be further improved through heat treatment methods like quenching and tempering.
| 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 |
You’ll find Alloy Steel AISI 4140 Bars and Rods commonly used in the production of gears, shafts, crankshafts, bolts, and other precision-engineered components in the automotive and machinery industries. In the oil and gas sector, they’re essential for drill collars, tool joints, and other high-stress parts. They also shine in construction equipment, mining tools, and forging applications that demand high wear resistance and strength. Thanks to their versatility, machinability, and durability, AISI 4140 Bars and Rods continue to be a top choice for critical and heavy-duty applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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