JIS G3101 SS400 Introduce
JIS G3101 is a Japanese steel standard used for industrial and construction applications. This steel is notable for its combination of high strength, excellent weldability and good formability. Production of the steel is done primarily through hot-rolling, cold-rolling and extrusion processes. The steel has a wide variety of chemical and mechanical properties that make it suitable for a wide range of construction applications.
Smelting temperature:1952°C - 1463°C
Application:General structure rolling steel
JIS G3101 SS400 Material Chemical Composition
The chemical composition of the JIS G3101 SS400 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | - | 0.0500 |
| PhOsphorus (P) | - | 0.0500 |
JIS G3101 SS400 Material Mechanical Properties
The material has a yield strength of 275-295MPa, depending on the thickness and grade of steel used. Additionally, the steel has high tensile strength, reaching up to 470- 610MPa. The material's elongation rate is generally around 18-24%, which can increase to as much as 32% for certain grades. The steel's hardness is generally between 167-229HBW.
The mechanical properties of the JIS G3101 SS400 steel are as follows:
| YieldRp0.2 | ≤ 616 (MPa) |
| TeileRm | ≤ 819 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 122 |
JIS G3101 SS400 Material Thermal Properties
The thermal performance parameters of the JIS G3101 SS400 steel are as follows:
| Temperature (°C) | 31 | 271 | 195 |
| Modulus of elasticity (GPa) | - | 376 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 34 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 131 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.23 | - | - |
| Deity (kg/dm³) | - | - | 313 |
| Poisson’s coefficient, ν | - | - | 332 |
JIS G3101 SS400 Material Machining Technology
JIS G3101 SS400 steel is a type of low-alloy structural steel. It is specifically designed for welded structures, bridges, ships, and other large structures and is a high-strength material with excellent weldability properties. It is also important to know that JIS G3101 SS400 steel needs to be machined correctly in order to achieve the desired performance and operational characteristics. Machining JIS G3101 SS400 steel can be challenging due to its high strength and toughness. Therefore, it is important to have a good understanding of the machining process, the tools and techniques required, and the best practices for successful machining of JIS G3101 SS400 steel.