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Home > Alloy Steel >AISI 4140 Tubing
Blundell Pipes and Tubes, located in Hamilton, New Zealand, stands out as a trusted manufacturer and supplier of top-notch industrial tubing that excels in tough environments. One of their standout offerings is AISI 4140 tubing, a robust and adaptable alloy steel that finds its place in various engineering and industrial applications. With a commitment to quality, Blundell Pipes and Tubes employs rigorous quality control and precise manufacturing methods to ensure that each tube adheres to international standards for strength, durability, and consistency. Their expertise enables them to deliver reliable AISI 4140 tubing solutions that are perfect for critical applications where dependability and structural integrity are paramount.
The AISI 4140 tubing is crafted from a chromium-molybdenum alloy steel that contains around 0.38–0.43% carbon, 0.75–1.0% chromium, 0.15–0.25% molybdenum, along with balanced amounts of manganese and silicon. This specific blend grants it exceptional hardenability, impressive tensile strength, and robust fatigue resistance. Even under significant stress or high temperatures, the tubing maintains good toughness and wear resistance. Its ability to be welded and machined allows for a variety of fabrication processes, and heat treatment can further boost its mechanical performance, making AISI 4140 a go-to choice for demanding structural and mechanical tasks.
| 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 Blundell 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.
Blundell Pipes and Tubes, a top supplier of AISI 4140 Tubing in Hamilton, New Zealand, 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 Blundell 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@blundellpipes.co.nz.
AISI 4140 tubing is a popular choice in industries that need strong, durable, and heat-treatable alloy steel. You’ll often find it in applications like automotive axles, drive shafts, hydraulic cylinders, crankshafts, machinery components, and heavy-duty structural parts. It’s also commonly used in oil and gas equipment, power transmission systems, and high-stress industrial assemblies where reliability under load is crucial. The blend of strength, toughness, and versatility makes AISI 4140 tubing an excellent fit for precision engineering projects.
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