Liam Steel is a reliable manufacturer and supplier of **Alloy Steel AISI 4140 Bars** based in **Manila, Philippines**. We specialize in providing high-strength, durable steel solutions tailored for tough industrial and mechanical applications. Our AISI 4140 Bars are crafted from chromium-molybdenum alloy steel, ensuring they offer outstanding toughness, hardness, and fatigue resistance—perfect for high-stress, heavy-duty, and structural uses. With advanced forging, heat treatment, and rigorous quality control, these bars guarantee consistent mechanical performance, precise dimensions, and a long service life. We proudly supply Alloy Steel AISI 4140 Bars to various sectors, including automotive, aerospace, machinery, and construction, delivering dependable, high-performance steel products throughout the Philippines.
Our Alloy Steel AISI 4140 Bars are composed of **chromium-molybdenum alloy steel** with about **0.38–0.43% carbon, 0.8–1.1% chromium, 0.15–0.25% molybdenum, and 0.75–1.0% manganese**, which gives them exceptional strength, hardness, and toughness. They boast a **tensile strength of up to 1080 MPa** and a **yield strength of around 850 MPa**, providing excellent fatigue resistance, impact strength, and dimensional stability. Plus, they maintain good machinability and weldability, making them ideal for critical industrial and structural applications.
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 |
Liam Steel’s Alloy Steel AISI 4140 Bars find extensive use in **automotive, aerospace, heavy machinery, oil and gas, and construction industries**. They are perfect for **shafts, gears, fasteners, crankshafts, machine components, and structural parts**, where high strength, toughness, and fatigue resistance are crucial. These bars excel in resisting wear, impact, and vibration, ensuring safe and long-lasting performance in demanding environments. With Liam Steel’s Alloy Steel AISI 4140 Bars, you get precision-engineered, durable, and cost-effective solutions for a wide array of industrial, mechanical, and structural needs.
Liam 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 Manila, Philippines.
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