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Home > Alloy Steel >AISI 4140 Tubing
Samia Pipes and Tubes, based in Tunis, Tunisia, is a leading manufacturer and supplier of high-quality AISI 4140 Tubing. Known for its exceptional strength, toughness, and reliability, our 4140 tubing is engineered to perform in demanding industrial applications. Manufactured using advanced processes and strict quality control, these tubes offer precise dimensions, excellent surface finish, and superior mechanical performance. Samia Pipes and Tubes serves clients worldwide, providing durable and versatile tubing solutions for industries such as automotive, oil and gas, machinery, and heavy engineering, ensuring optimal performance and long-term operational efficiency.
AISI 4140 tubing is a chromium-molybdenum alloy steel with balanced carbon, chromium, molybdenum, and manganese content. This composition provides excellent hardness, tensile strength, and wear resistance. 4140 tubing exhibits high fatigue strength, toughness, and good machinability. It maintains mechanical stability under heavy loads, moderate-to-high temperatures, and pressure conditions. The alloy’s hardenability allows for heat treatment to achieve superior hardness and strength, making it suitable for demanding engineering and structural applications requiring durability and long-term 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 Samia 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.
Samia Pipes and Tubes, a top supplier of AISI 4140 Tubing in Tunis, Tunisia, 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 Samia 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@samiapipes.com.
AISI 4140 tubing is widely used in industries requiring strength, durability, and resistance to wear. Common applications include automotive components, hydraulic and pneumatic systems, oil and gas pipelines, heavy machinery, and construction equipment. It is also used in aerospace, industrial shafts, and structural frameworks where high tensile strength and toughness are critical. 4140 tubing can be heat-treated to enhance hardness and performance, making it suitable for demanding operational environments. Its combination of strength, fatigue resistance, and machinability ensures reliable and long-lasting performance in a wide range of industrial and engineering applications.
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