JIS G3114 SMA400AW Introduce
JIS G3114 is a Japanese Industrial Standard that classifies steel based on its chemical and physical properties. JIS G3114 is primarily used for hot-rolled steel sheets, plates and strips for automotive, construction, pressure vessels and other applications. JIS G3114 steel is available in different grades, each of which has different chemical composition and mechanical properties. The chemical and mechanical properties of JIS G3114 steel are important in determining the mechanical properties of the final product.
Smelting temperature:1615°C - 1972°C
Application:Hot rolled atmospheric corrosion resistant welded structural steel
JIS G3114 SMA400AW Material Chemical Composition
The chemical composition of the JIS G3114 SMA400AW 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 SMA400AW Material Mechanical Properties
JIS G3114 SMA400AW steel is known for its unique chemical and physical properties, which give it enhanced mechanical properties such as high tensile strength, yield strength, impact strength and hardness. Each grade has different properties and applications, so it is important to select the right grade for the specific application.
The mechanical properties of the JIS G3114 SMA400AW steel are as follows:
| YieldRp0.2 | ≤ 678 (MPa) |
| TeileRm | ≤ 642 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 414 |
JIS G3114 SMA400AW Material Thermal Properties
The thermal performance parameters of the JIS G3114 SMA400AW steel are as follows:
| Temperature (°C) | 42 | 423 | 546 |
| Modulus of elasticity (GPa) | - | 232 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 112 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.42 | - | - |
| Deity (kg/dm³) | - | - | 123 |
| Poisson’s coefficient, ν | - | - | 114 |
JIS G3114 SMA400AW Material Machining Technology
JIS G3114 SMA400AW steel is relatively easy to machine with the aid of good cutting tools and high cutting speeds. The machinability of JIS G3114 SMA400AW steel is highly dependent on its heat-treatment and can be improved by pre-heat-treating the steel prior to machining. JIS G3114 SMA400AW steel can be machined in both the normalized and annealed condition although the annealed condition yields better machinability as it allows for softer chips which breaks off more easily.