Alloy steels comprise many types of steels whose compositions exceed the limitations of C, Mo, Cr, Va, Mn, Ni, Si, and B allocated for carbon steels. These steels are more responsive to mechanical and heat treatments than carbon steels.
| Element | Content(%) |
|---|---|
| Iron, Fe | 94.495-95.88 |
| Nickel, Ni | 3.20-3.80 |
| Manganese, Mn | 0.400-0.800 |
| Molybdenum, Mo | 0.200-0.300 |
| Carbon, C | 0.170-0.230 |
| Silicon, Si | 0.150-0.300 |
| Sulfur, S | ≤ 0.0400 |
| Phosphorous, P | ≤ 0.0350 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 685 MPa | 99400 psi |
| Yield strength | 460 MPa | 66700 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Rockwell C (converted from Brinell hardness, value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (annealed and cold drawn, based on 100 machinability for AISI 1212 steel) | 50 | 50 |
| Production Route | Hot Rolled, Cold Rolled |
|---|---|
| Material Standard | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry |
| Size | Width from 100mm to 3000mm ; Length from 500mm to 12000mm |
| Thickness | 0.1mm to 400mm |
| Delivery Condition | As Rolled, Annealed, Quenched and Tempered, Normalized |
| Surface Finish | Plain, Brushed, Cladded |
ASTM A304
SAE J1268
1) Structures in Buildings, bridges, railway stations.
2) Fabrication of pipeline components & Industrial equipment.
3) Construction of automotive bodies, warehouses, shipping containers.
4) Commercial appliances, etc.