UNS G10300 S30C Carbon steel
Carbon steels are those that have carbon as the main alloying element. They also contain up to 0.4% silicon and 1.2% manganese. In addition, the residual elements such as copper, molybdenum, aluminium, chromium and nickel are present in these steels.
The AISI 1030 steel is a high carbon steel, and has moderate strength and hardness in the as-rolled condition. It can be hardened and strengthened by cold work. It also has fair machinability, ductility and good weldability.
The following sections will discuss in detail about AISI 1030 carbon steel.
The chemical composition of AISI 1030 carbon steel is outlined in the following table.
Element | Content (%) |
---|---|
Iron, Fe | 98.67-99.13 |
Manganese, Mn | 0.60-0.90 |
Carbon, C | 0.270-0.340 |
Phosphorous, P | ≤ 0.040 |
Sulfur, S | ≤ 0.050 |
The physical properties of AISI 1030 carbon steel are tabulated below.
Properties | Metric | Imperial |
---|---|---|
Density | 7.85 g/cc | 0.284 lb/in3 |
Melting point | 1510°C | 2750°F |
The following table shows mechanical properties of the cold drawn AISI 1030 carbon steel.
Properties | Metric | Imperial |
---|---|---|
Tensile strength, ultimate | 525 MPa | 76100 psi |
Tensile strength, yield | 440 MPa | 63800 psi |
Modulus of elasticity | 190-210 GPa | 29700-30458 ksi |
Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
Poissons ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 12% | 12% |
Reduction of area | 35% | 35% |
Hardness, Brinell | 149 | 149 |
Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
Hardness, Rockwell B (converted from Brinell hardness) | 80 | 80 |
Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
Machinability (based on AISI 1212 steel. as 100 machinability) | 70 | 70 |
The thermal properties of AISI 1030 carbon steel are given in the following table.
Properties | Metric | Imperial |
---|---|---|
Thermal expansion co-efficient (@15-75°C/59-167°F) | 11.7 µm/m°C | 6.50 µin/in°F |
Thermal Conductivity | 51.9 W/mK | 360 BTU in/hr.ft2.°F |
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