Alloy steels are designated by AISI four-digit numbers and are more susceptible to heat and mechanical treatments than carbon steels. They comprise different kinds of steels having compositions which exceed the limitations of Va, Cr, Si, Ni, Mo, C and B in the carbon steels.
| Element | Content(%) |
|---|---|
| Iron, Fe | 96.405 - 97.38 |
| Nickel, Ni | 1.65 - 2 |
| Manganese, Mn | 0.450 - 0.650 |
| Molybdenum, Mo | 0.2 - 0.3 |
| Carbon, C | 0.170 - 0.220 |
| Silicon, Si | 0.150 - 0.350 |
| Sulfur, S | 0.04 |
| Phosphorous, P | 0.0350 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 510 MPa | 74000 psi |
| Tensile strength, yield | 370 MPa | 53700 psi |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel)) | 80 GPa | 11600 ksi |
| Poissons ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 31.30% | 31.30% |
| Reduction of area | 60.30% | 60.30% |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
| Hardness, Rockwell B | 80 | 80 |
| Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
| Machinability (hot rolled and cold drawn. Based on 100 machinability for AISI 1212 steel) | 65 | 65 |
| 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 |
AMS 6294
AMS 6294C
ASTM A29 (4620)
ASTM A322 (4620)
ASTM A331 (4620)
ASTM A505
ASTM A519 (4620)
ASTM A535 (4620)
ASTM A646 (4620-3)
ASTM A752 (4620)
ASTM A829
SAE J1397 (4620)
SAE J404 (4620)
SAE J412 (4620)
MIL SPEC MIL-S-7493 (A4620)
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.