AISI 4140 tubing is a robust, low-alloy steel tube celebrated for its impressive mechanical properties, toughness, and wear resistance. Made primarily from chromium, molybdenum, and carbon, this tubing falls under the 41xx series of steels and finds its place in industries where strength, hardness, and fatigue resistance are paramount. Typically available in seamless or DOM (Drawn Over Mandrel) forms, AISI 4140 tubing is utilized in both structural and mechanical applications. Its adaptability and capacity for heat treatment make it a go-to material in sectors like automotive, aerospace, oil & gas, and heavy equipment.
When it comes to its chemical makeup, AISI 4140 generally contains carbon (0.38–0.43%), chromium (0.80–1.10%), molybdenum (0.15–0.25%), and manganese (0.75–1.00%). These alloying elements work together to provide high tensile strength, solid toughness, and remarkable hardenability. The mechanical properties of heat-treated 4140 tubing often showcase a tensile strength ranging from 655 to 1080 MPa, yield strength between 415 and 930 MPa, and impressive impact resistance. It’s also easy to machine, weld (with the right pre- and post-heat treatments), and surface-treat for enhanced performance in tough environments.
| STANDARD | WERKSTOFF NR. | UNS | AFNOR | EN | JIS | BS | GOST |
| AISI 4140 | 1.7218 | G41300 | – | 25CrMo4 | JIS G4105 | BS 970 | – |
| AISI 4140 | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 0.50 max | 0.28-0.33 | 0.15-0.25 | 0.40-0.60 | 0.15-0.35 | 97.3-98.22 | – | 0.025 MAX | 0.035 MAX | 0.80-1.10 |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 0.28 | 2580 | 460 MPa | 560 MPa | 20 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Jaxon Steel is a leading manufacturer and distributor of high-quality AISI 4140 Tubing in Istanbul, Turkey. We offer premium steel materials and a diverse range of products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel. Our extensive inventory includes Tubes, Pipes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Committed to prompt delivery and exceptional customer service, we source the finest raw materials to ensure superior strength and performance in demanding industrial applications. Contact us today for all your AISI 4140 Tubing needs!
AISI 4140 tubing is employed in a variety of demanding applications, including hydraulic cylinders, axles, drive shafts, roll cages, drill collars, and downhole tools. In the automotive and aerospace fields, it’s particularly valued for its strength-to-weight ratio and fatigue performance. The oil and gas industry also relies on it for high-pressure tubing and structural supports. With its outstanding mechanical performance, coupled with ease of fabrication and heat treatment, AISI 4140 tubing stands out as a dependable and cost-effective choice for engineers and manufacturers across numerous critical industries.
Filiz Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Istanbul, Turkey.
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