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Home > Alloy Steel >AISI 4140 Tubing
AISI 4140 Tubing is a robust chromium-molybdenum alloy steel known for its impressive toughness, wear resistance, and fatigue strength. Thanks to its outstanding mechanical properties, it’s perfect for applications that demand high durability, especially under heavy loads and high-pressure situations. This tubing is a go-to in industries like automotive, aerospace, oil and gas, and industrial engineering, where reliable performance is crucial in tough environments. Its unique blend of strength, hardness, and corrosion resistance, along with good machinability and weldability, makes it a top choice for structural, mechanical, and high-performance applications that require longevity and consistent reliability.
Typically, AISI 4140 Tubing contains about 0.38–0.43% carbon, 0.80–1.10% chromium, and 0.15–0.25% molybdenum, along with controlled levels of manganese, silicon, phosphorus, and sulfur. This specific composition boosts its tensile and yield strength, hardness, and fatigue resistance while keeping its toughness and ductility intact. Mechanically, 4140 tubing stands out for its excellent wear resistance, impact strength, and performance under repeated stress cycles. It’s also highly adaptable for heat treatment, welding, and machining, making it suitable for a variety of industrial and structural applications that require high mechanical reliability.
| Dimensions | ASTM, ASME and API |
|---|---|
| Supplier of 4140 Alloy Steel Tube in Length | Within 13500 millimeter |
| Speciality in | Large Diameter Size |
| Size | 4 to 219 millimeter W. T.: 0.5 to 20 millimeter |
| Length | In Single and Double Random & Cut to Length Suppliers |
| AISI 4140 Tube Type | Welded / Seamless / Fabricated / ERW |
| Form | Round, Square, Rectangular, Hydraulic. |
| End | Plain End, Threaded, Beveled End |
| Standard | Grade | C | Mn | P | S | Si | Ni | Cr | Mo |
| ASTM A29 | 4140 | 0.38-0.43 | 0.75-1.00 | 0.035 | 0.040 | 0.15-0.35 | – | 0.8-1.10 | 0.15-0.25 |
| EN 10250 | 42CrMo4/ 1.7224 | 0.38-0.45 | 0.6-0.9 | 0.035 | 0.035 | 0.4 | – | 0.9-1.2 | 0.15-0.30 |
| JIS G4105 | SCM440 | 0.38-0.43 | 0.60-0.85 | 0.03 | 0.03 | 0.15-0.35 | – | 0.9-1.2 | 0.15-0.30 |
| Properties | Metric | Imperial |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Tensile strength | 655 MPa | 95000 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Yield strength | 415 MPa | 60200 psi |
| Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Hardness, Brinell | 197 | 197 |
| Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
When you choose AISI 4140 Tubing from Laila Pipes and Tubes, you can count on exceptional quality and long-lasting durability. These tubes offer excellent corrosion resistance and high strength, making them perfect for various industrial applications. Our commitment to outstanding service and reliable delivery guarantees customer satisfaction with every order. With extensive expertise in stainless steel products, we provide premium solutions tailored to meet your unique needs.
Laila Pipes and Tubes, a top supplier of AISI 4140 Tubing in Dubai, OMAN, offers a comprehensive range of high-quality pipes and tubes for various industrial applications. With an extensive inventory and a commitment to exceptional customer service, they have become the go-to source for stainless steel products in the area.
At Laila Pipes and Tubes, we specialize in providing custom-sized AISI 4140 Tubing designed to meet your specific requirements. Our expert team is committed to delivering personalized solutions for all your piping and tubing needs. For more details, contact us at sales@lailapipes.com.
AISI 4140 Tubing is widely utilized in industries that need strong, durable, and dependable tubing solutions. In the automotive sector, it’s commonly found in axles, shafts, and suspension components. The aerospace industry uses it for structural supports, landing gear, and hydraulic systems. In the oil and gas and petrochemical fields, 4140 tubing is essential for pipelines, pressure vessels, and mechanical frameworks. Its combination of hardness, toughness, fatigue resistance, and corrosion resistance makes AISI 4140 Tubing a trusted option for demanding industrial, mechanical, and structural applications.
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