
Alloy steels are designated by AISI four-digit numbers. The first two digits represent the main alloying elements, and the last two digits indicate the carbon content present in the alloy in hundredth of a percent. They quickly respond to mechanical and heat treatments. They include wide variety of steels having compositions which exceed the limitations of Mn, C, Mo, Si, Ni, Va, and B set for carbon steels.
| Element | Content(%) |
|---|---|
| Iron, Fe | 98.025 |
| Manganese, Mn | 0.70 - 0.90 |
| Carbon, C | 0.30 - 0.35 |
| Silicon, Si | 0.20 - 0.35 |
| Molybdenum, Mo | 0.20 - 0.30 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| 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 |