Semih Metals, located in Istanbul, Turkey, has earned a solid reputation as a reliable manufacturer and supplier of top-notch Alloy Steel AISI 4140 Bars and Rods, serving a variety of industrial sectors around the globe. With a focus on advanced production techniques, strict quality control, and a customer-first mindset, the company guarantees that every product aligns with international standards. The Alloy Steel AISI 4140 Bars and Rods are crafted for exceptional strength, toughness, and durability, making them a dependable choice for critical engineering tasks. Semih Metals is dedicated to fostering long-lasting partnerships by providing precision-engineered solutions that support the success of industries like automotive, oil and gas, construction, aerospace, power generation, and heavy machinery.
These Alloy Steel AISI 4140 Bars and Rods are made from chromium-molybdenum steels, incorporating carbon, manganese, silicon, chromium, and molybdenum as essential elements. This unique blend boosts their toughness, strength, and wear resistance while ensuring good machinability and ductility. With impressive tensile strength, high fatigue resistance, and solid impact properties, AISI 4140 delivers reliable performance even in challenging conditions. These bars and rods also feature consistent hardness and can be heat-treated for enhanced strength, making them adaptable for high-stress industrial settings where mechanical efficiency and durability are crucial.
| 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 |
The versatility of Alloy Steel AISI 4140 Bars and Rods makes them a popular choice across various industries. In the automotive field, they are used to manufacture gears, shafts, axles, and crankshafts. The oil and gas sector relies on them for drill collars, tool joints, and downhole components, thanks to their resistance to fatigue and wear. The aerospace and defense industries take advantage of their high tensile properties for structural components. Moreover, they find applications in heavy machinery, construction equipment, and power transmission systems, where performance under extreme loads and stresses is essential.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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