Looking for a reliable source of high-quality materials? Look no further! Based in Cape Town, South Africa, we are a top manufacturer and supplier specializing in Alloy Steel AISI 4140 Bar. This remarkable alloy is celebrated for its impressive strength, toughness, and wear resistance, making it perfect for demanding industrial applications. Crafted with cutting-edge steelmaking techniques and rigorous quality controls, our Alloy Steel AISI 4140 Bar guarantees consistent performance, precision, and a long service life. Whether you’re in the automotive, aerospace, construction, or heavy machinery sectors, this bar offers durable, high-performance solutions for components that face high stress, impact, and fatigue, ensuring reliability even in the toughest conditions.
What makes Alloy Steel AISI 4140 Bar stand out? It’s made from a blend of chromium, molybdenum, carbon, manganese, and silicon, resulting in a low-alloy steel that boasts high hardenability and mechanical strength. With excellent tensile and yield strength, superior toughness, and good fatigue resistance, this bar can be heat-treated to achieve various hardness levels while still maintaining its ductility and machinability. Its robust mechanical properties allow it to handle heavy loads, impacts, and wear, ensuring dependable performance and structural integrity in demanding industrial settings where durability and long-term reliability are a must.
Diameter : 8mm-3000mm
Length : 3,000-10,000mm
Finish : Bright, Polish & Black
Condition : Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished
Form : Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.
| Grade | C | Cr | Si | S | Mn | P | Mo | |
| AISI 4140 | min. | 0.38 | 0.8 | 0.15 | – | 0.75 | – | 0.15 |
| max. | 0.43 | 1.10 | 0.35 | 0.04 | 1.00 | 0.04 | 0.25 | |
| Grade | Tensile Strength (ksi) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (ksi) min | Hardness |
| AISI 4140 | 855 | 20 | 621 | 197 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | UNS | WERKSTOFF NR. |
| AISI 4140 | G41400 | 1.7225 |
Alloy Steel AISI 4140 Bar is a go-to choice in industries that need strong, durable, and wear-resistant materials. You’ll find it in automotive components like gears, shafts, and crankshafts, as well as in aerospace structural parts, oil and gas equipment, and pressure vessels. It’s also essential in construction machinery, tooling, and heavy equipment where high strength and toughness are critical. Thanks to its excellent mechanical properties and heat-treatable nature, this bar is ideal for high-stress, fatigue-prone, and wear-intensive applications. With Alloy Steel AISI 4140 Bar, you can count on long-lasting performance, reduced maintenance, and reliable operation in even the most challenging industrial environments.
ThabisoSteel 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 Cape Town, South Africa.
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