JIS G3454 STPG 42 Introduce
JIS G3454 STPG 42 steel is a kind of carbon steel widely used in Japan and other parts of Asia. It is a type of structural steel that is commonly used in applications such as structural components, pipes, and fittings. This steel has a good combination of weldability and strength, which makes it an ideal choice for many engineering applications.
Smelting temperature:1826°C - 1848°C
Application:Pressure carbon steel pipe
JIS G3454 STPG 42 Material Chemical Composition
The chemical composition of the JIS G3454 STPG 42 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.3500 |
| Sulfur (S) | - | 0.0400 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 0.3000 | 1.0000 |
| Carbon (C) | - | 0.3000 |
JIS G3454 STPG 42 Material Mechanical Properties
Machining of JIS G3454 STPG 42 steel is a process by which a range of components for various engineering applications are made. This type of steel has excellent mechanical properties, making it an ideal choice for producing a variety of components. It is renowned for its resistance to corrosion, strength, and its excellent formability, making it suitable for various tasks and applications. Furthermore, it is used in construction, automobile components, and shipbuilding, amongst many other industries.
The mechanical properties of the JIS G3454 STPG 42 steel are as follows:
| YieldRp0.2 | ≤ 559 (MPa) |
| TeileRm | ≤ 748 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 332 |
JIS G3454 STPG 42 Material Thermal Properties
The thermal performance parameters of the JIS G3454 STPG 42 steel are as follows:
| Temperature (°C) | 12 | 555 | 111 |
| Modulus of elasticity (GPa) | - | 549 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 313 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 222 |
| Poisson’s coefficient, ν | - | - | 221 |
JIS G3454 STPG 42 Material Machining Technology
The weldability of JIS G3454 STPG 42 steel is good as it can easily be cut and welded with the right techniques. It has adequate strength and ductility, allowing it to be welded without risk of cracking or warping. Furthermore, its impact resistance and wear resistance make it a suitable choice for welded components.