JIS G3114 SMA490AW Introduce
The JIS G3114 steel standard is a comprehensive and beneficial standard for steel products. It provides important guidelines for the quality of steel products, as well as a framework for classifying different types of steel. The standard also covers a range of materials from different categories, including hot-rolled, cold-rolled and alloy steel, as well as specialized steel products like welded wire mesh and universal plates. As such, JIS G3114 is an invaluable resource for the steel industry in Japan and worldwide.
Smelting temperature:1948°C - 1484°C
Application:Hot rolled atmospheric corrosion resistant welded structural steel
JIS G3114 SMA490AW Material Chemical Composition
The chemical composition of the JIS G3114 SMA490AW 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) | - | 1.4000 |
| Copper (Cu) | 0.3000 | 0.5000 |
| Chromium (Cr) | 0.4500 | 0.7500 |
| (CEV) | - | 0.4100 |
| Carbon (C) | - | 0.1800 |
JIS G3114 SMA490AW Material Mechanical Properties
JIS G3114 SMA490AW 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 SMA490AW steel are as follows:
| YieldRp0.2 | ≤ 751 (MPa) |
| TeileRm | ≤ 767 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 32% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 324 |
JIS G3114 SMA490AW Material Thermal Properties
The thermal performance parameters of the JIS G3114 SMA490AW steel are as follows:
| Temperature (°C) | 14 | 472 | 915 |
| Modulus of elasticity (GPa) | - | 228 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 314 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 142 |
| Poisson’s coefficient, ν | - | - | 314 |
JIS G3114 SMA490AW Material Machining Technology
The ratio between the feed and the speed of a cutting tool should also be taken into consideration when machining JIS G3114 SMA490AW steel. Generally, the feed should be low while the speed high. This helps to reduce the amount of heat generated during the cutting process and reduce tool wear.