Alloy Steel
Alloy Steel
Alloy steels are indispensable materials in the construction, machine building and energy industries for high-strength structural components, high-temperature pressure-resistant equipment and other scenarios.
Features of Alloy Steel
- Enhanced strength, corrosion resistance, and heat tolerance from added elements like chromium, nickel, or molybdenum.
- Superior hardenability and durability via heat treatment, enabling tailored mechanical properties for demanding applications.
- Versatility in extreme environments, widely used in aerospace, automotive, and tooling due to its wear resistance and load-bearing capacity.
Parameter of Alloy Steel
| Topic | Content |
| Standard | – International Standards: ASTM (e.g., ASTM A387, AISI 4140); GB (e.g., GB/T 3077, GB/T 5216); JIS (e.g., JIS G4104, JIS G4404); DIN (e.g., DIN EN 10083); ISO (e.g., ISO 683) – Industry Standards: SAE, EN, ASME, etc. |
| Grades | – ASTM:1045, 1018, 4145, 4140, 4130, 4340, 8620, 52100 – GB: 20CrMnTi, 40Cr, 35CrMo, GCr15 – JIS: SCM440, SNCM220, SUJ2 -DIN: 42CrMo4, 34CrNiMo6, 25CrMo4, 36CrNiMo4, 31CrMoV9, 30CrNiMo8, 20MnCr5, 17CrNiMo6, 18CrNiMo7-6 etc – ISO: 34Cr4, 41Cr4, 100Cr6 |
| Classification | 1. By Alloying Elements: – Chromium Steel (e.g., 40Cr, SCM440) – Nickel Steel (e.g., 34CrNiMo6) – Molybdenum Steel (e.g., 42CrMo4) – Bearing Steel (e.g., GCr15, SUJ2) 2. By Heat Treatment State: Quenched and tempered steel, carburized steel, hardened steel, etc. |
| Size | – Plates: Thickness 10~720mm, width 1000~2500mm, length 2000~6000mm – Bars: Diameter 5~900mm (round steel, square steel), within 6000mm lengths – Pipes: Outer diameter 10~500mm, wall thickness 1~50mm |
Industries Using Steel
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