JIS G3101 SS490 Introduce
The JIS G3101 SS490 steel is a popular steel material used for construction and engineering purposes. It is often used for structural components such as bridge beams, beam connections, and columns, as well as for mechanical components, pressure vessels, and shipbuilding. Because of its versatility, it has been used in a variety of applications across many different industries.
Smelting temperature:1355°C - 1593°C
Application:General structure rolling steel
JIS G3101 SS490 Material Mechanical Properties
The impact test value of JIS G3101 SS490 steel is also important when assessing its suitability for use in a given application. The impact test value corresponds to the capacity of the steel to absorb energy. The strength of the material is expressed as the Charpy v-notch test value (Cv). Values of Cv range from 27J (for grade SS400) to 20J (for grade SS490).
The mechanical properties of the JIS G3101 SS490 steel are as follows:
| YieldRp0.2 | ≤ 868 (MPa) |
| TeileRm | ≤ 586 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 141 |
JIS G3101 SS490 Material Thermal Properties
The thermal performance parameters of the JIS G3101 SS490 steel are as follows:
| Temperature (°C) | 22 | 158 | 446 |
| Modulus of elasticity (GPa) | - | 331 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 213 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 442 |
| Poisson’s coefficient, ν | - | - | 422 |
JIS G3101 SS490 Material Machining Technology
When machining JIS G3101 SS490 steel, the best cutting tool material to use is high-speed steel (HSS). HSS tools have the highest strength and wear resistance of any cutting tool material, making them ideal for machining through cast material that contains difficult-to-cut elements such as cobalt, chromium, and molybdenum. Other cutting tools such as carbide and cobalt can also be used, but these materials can wear down quicker than HSS when machining through the hard physical properties of the material.