Carbon steels contain carbon as the main alloying element. They are designated by AISI four-digit numbers, and contain 0.4% of silicon and 1.2% of manganese. Molybdenum, chromium, nickel, copper, and aluminium are present in small quantities. Impurities such as sulfur and phosphorous are also found in these steels.
| Element | Content(%) |
|---|---|
| Iron, Fe | 98.46-98.92 |
| Manganese, Mn | 0.60-0.90 |
| Carbon, C | 0.470-0.55 |
| Sulfur, S | ≤ 0.050 |
| Phosphorous, P | ≤ 0.040 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 690 MPa | 100000 psi |
| Yield strength | 580 MPa | 84100 psi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 10% | 10% |
| Reduction of area | 30% | 30% |
| Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | - |
| 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 |
| 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 |