1050 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.
1050 carbon steel chemical composition
| 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 |
1050 carbon steel physical properties
| Properties | Metric | Imperial |
| Density | 7.85 g/cm3 | 0.284 lb/in³ |
1050 carbon steel thermal properties
| Properties | Metric | Imperial |
| Thermal conductivity (typical steel) | 49.8 W/mK | 346 BTU in/hr.ft².°F |
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