JIS G3114 SMA400CW Introduce
The Japanese Industrial Standard JIS G3114 is an essential standard for steel plate and related products in the Japanese steel market. It is the result of many years of research and discussions among experts in the materials and ceramic industry, and it has become the basis for all other steel standards in the world. The JIS G3114, which was established in 1980, is a steel standard that covers steel plates and supplies as well as dedicated steel products for all industrial purposes. It aims to improve the operational conditions and efficiency of production, as well as ensuring the quality of all steel products manufactured. The standard also tries to keep a close control of steel production, making it possible to classify and identify different types of steel.
Smelting temperature:1877°C - 1319°C
Application:Hot rolled atmospheric corrosion resistant welded structural steel
JIS G3114 SMA400CW Material Chemical Composition
The chemical composition of the JIS G3114 SMA400CW steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.6500 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | 0.0500 | 0.3000 |
| Manganese (Mn) | - | 1.2500 |
| Copper (Cu) | 0.3000 | 0.5000 |
| Chromium (Cr) | 0.4500 | 0.7500 |
| Carbon (C) | - | 0.1800 |
JIS G3114 SMA400CW Material Mechanical Properties
JIS G3114 SMA400CW steel has a wide range of chemical compositions depending on grade, ranging from very low carbon contents to high-manganese contents. Low-carbon grades have poor weldability, but are tougher and more resistant to corrosion. High-manganese grades have improved weldability in addition to enhanced strength and corrosion resistance.
The mechanical properties of the JIS G3114 SMA400CW steel are as follows:
| YieldRp0.2 | ≤ 517 (MPa) |
| TeileRm | ≤ 741 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 114 |
JIS G3114 SMA400CW Material Thermal Properties
The thermal performance parameters of the JIS G3114 SMA400CW steel are as follows:
| Temperature (°C) | 22 | 578 | 143 |
| Modulus of elasticity (GPa) | - | 442 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 132 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.23 | - | - |
| Deity (kg/dm³) | - | - | 221 |
| Poisson’s coefficient, ν | - | - | 144 |
JIS G3114 SMA400CW Material Machining Technology
For good machining results with JIS G3114 SMA400CW steel, it is important to use a high cutting speed. The cutting speed should be at least 50 m/min when machining JIS G3114 SMA400CW steel in the normalized condition and at least 70 m/min when machining it in the annealed condition. It is important to note that the cutting speed should be gradually increased in small increments to prevent thermal shock and rapid tool deterioration.