Chuck Metals is a reliable manufacturer and supplier of Alloy Steel AISI 4140 Bars and Rods based in Singapore, providing high-strength alloy products to various industries across Pulau Ujong and Southeast Asia. AISI 4140 is a chromium-molybdenum steel celebrated for its outstanding strength, hardenability, and fatigue resistance, making it a perfect fit for heavy-duty industrial applications. Our 4140 bars and rods are crafted in accordance with ASTM A29/A322 standards, ensuring precise dimensions, top-notch mechanical performance, and remarkable durability for essential components in engineering and structural projects.
Typically, AISI 4140 Bars and Rods contain 0.38–0.43% carbon, 0.75–1.0% chromium, 0.15–0.25% molybdenum, and 0.75–1.0% manganese, which contribute to their excellent mechanical strength and wear resistance. They boast a tensile strength ranging from 655 to 1080 MPa, yield strength between 415 and 930 MPa, and maintain high toughness even at elevated temperatures. AISI 4140 is also heat-treatable, allowing for a variety of strength and hardness adjustments through quenching and tempering. Additionally, it shows good machinability and moderate corrosion resistance when properly coated or treated.
| 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 |
AISI 4140 Bars and Rods find extensive use in sectors like automotive, aerospace, oil & gas, power generation, and heavy machinery. Common applications include gears, axles, shafts, bolts, drill collars, and forged components that require high fatigue and impact resistance. With its toughness and wear resistance, it proves especially valuable in high-stress, high-load environments, delivering long-lasting performance and minimizing maintenance costs across critical systems and assemblies.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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