Alloy steels those that are added with alloying elements to achieve certain material properties. Alloying elements are added in lower quantities to increase hardenability or strength, and in larger quantities to achieve special properties like high temperature stability or corrosion resistance. AISI 4620H is a nickel-molybdenum steel.
| Element | Content(%) |
|---|---|
| Iron, Fe | 96.295 - 97.58 |
| Nickel, Ni | 1.55 - 2 |
| Manganese, Mn | 0.35 - 0.75 |
| Molybdenum, Mo | 0.20 - 0.30 |
| Carbon, C | 0.17 - 0.23 |
| Silicon, Si | 0.15 - 0.35 |
| Sulfur, S | ≤0.040 |
| Phosphorous, P | ≤0.035 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 600 MPa | 87000 psi |
| Yield strength | 380 Mpa | 55100 psi |
| Modulus of elasticity | 205 Gpa | 29700 ksi |
| Bulk modulus | 140 Gpa | 20300 ksi |
| Shear modulus | 80 Gpa | 11600 ksi |
| Poisson’s ratio | 0.29 | 0.29 |
| Elongation at break | 30.70% | 30.70% |
| Reduction of area | 68% | 68% |
| Hardness, Brinell | 192 | 192 |
| Hardness, Vickers | 201 | 201 |
| Hardness, Knoop | 214 | 214 |
| Hardness, Rockwell C | 11 | 11 |
| Hardness, Rockwell B | 91 | 91 |
| Machinability | 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 |
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.