Alloy steel contains alloying elements such as aluminum, chromium, copper, titanium, nickel, silicon and manganese in varying amounts to manipulate the properties of steel such as weldability, strength, formability, hardenability and corrosion resistance. AISI 4320H is a nickel-chromium-molybdenum steel.
| Element | Content(%) |
|---|---|
| Iron, Fe | 95.745 - 97.18 |
| Nickel, Ni | 1.55 - 2 |
| Manganese, Mn | 0.40 - 0.70 |
| Chromium, Cr | 0.35 - 0.65 |
| Molybdenum, Mo | 0.20 - 0.30 |
| Carbon, C | 0.17 - 0.23 |
| Silicon, Si | 0.15 - 0.30 |
| Sulfur, S | ≤0.040 |
| Phosphorous, P | ≤0.035 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 1505 MPa | 218300 psi |
| Yield strength | 1050 MPa | 152000 psi |
| Modulus of elasticity | 1225 GPa | 177700 psi |
| Bulk modulus | 140 GPa | 20300 ksi |
| Shear modulus | 80 GPa | 11600 ksi |
| Poisson’s ratio | 0.29 | 0.29 |
| Elongation at break | 13.50% | 13.50% |
| Reduction of area | 48.20% | 48.20% |
| Hardness, Brinell | 429 | 429 |
| Hardness, Vickers | 455 | 455 |
| Hardness, Knoop | 461 | 461 |
| Hardness, Rockwell C | 46 | 46 |
| Hardness, Rockwell B | 105 | 105 |
| 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
AMS 6299
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.