Brian Fasteners provides superior AISI 4140 Alloy Steel Bars and Rods throughout Houston, USA, for clients looking for high-strength, hard, and versatile materials. Our 4140 bars are designed with superior performance for harsh environments and provide superior fatigue resistance, machinability, and dimensional stability. With strong inventory and technical support, we supply industries such as defense, automotive, heavy machinery, and tooling. Brian Fasteners provides compliance with international standards, rapid delivery, and precision-finished bars with specifications tailored to your precise project needs.
AISI 4140 is a chromium-molybdenum alloy steel containing 0.38–0.43% carbon, 0.75–1.0% manganese, 0.8–1.1% chromium, and 0.15–0.25% molybdenum. It has tensile strength of 655–1080 MPa and yield strength of around 415–655 MPa. 4140 bars have high fatigue strength, good impact resistance, and can be heat-treated for increased hardness. The alloy shows superior toughness even in hardened states. It also maintains machinability and stability and is thus appropriate for critical engineering components. This renders it one of the most common alloy steels.
| 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 |
4140 Bars/Rods are suitable for applications where there is a need for high strength and abrasion resistance. They are used in the manufacture of axles, shafts, gears, fasteners, dies, and tooling machines. The toughness and endurance limit of the alloy render it suitable for equipment used in mining, crankshafts, and structural members. It is also utilized in heavily stressed components of automotive and hydraulic systems. Heat-treatability and machinability enable customization of hardness levels in applications. With high tensile strength and deformation resistance, 4140 steel is a popular option in most heavy-duty industrial operations.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
Copyright 2024 George Metals. All rights reserved
