Q235 steel has good plasticity, toughness and weldability, as well as a moderate strength, good cold bending performance. Q235 material is commonly rolled into wire rod or round steel, square steel, flat steel, angle steel, I beam, channel steel, other sections and steel plates. These products are widely used in construction and engineering welded structures, to make steel bars or build factory buildings, high voltage transmission towers, bridges, vehicles, boilers, containers, etc., and also used as a mechanical part with less demanding performance such as less stressed rods, connecting rods, screws, nuts, ferrules, brackets, and stands, etc.
Physical Properties
Notes:
10-6·K-1 = 10-6/K
1 Ω·mm²/m = 1 μΩ·m
1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
1 GPa = 1 kN/mm2
1 MPa = 1 N/mm2
| Physical Properties | |
| Density, g/cm3 (lb/in3) | 7.85 (0.284) |
| Melting point, °C (°F) | 1450-1530 (2640-2800) |
| Specific heat capacity, J/(Kg·K) | 470 at 20 °C (68 °F) |
| Electrical resistivity, μΩ·m | about 0.15 (20 °C) |
| Elastic modulus, GPa (ksi) | 200 (29 x 103) |
| Thermal conductivity, (W/m·K) | 53-49 (0-100 °C) |
| Coefficient of thermal expansion, (10-6/K) | 11.3-11.6 at 20-100 °C (68-212 °F) |
| Young’s modulus, GPa (ksi) | 200 (29 x 103) |
| Poisson’s ratio | 0.24-0.28 |
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