JIS G3115 SPV450 Introduce
JIS G3115 is a Japanese steel standard for hot-rolled steel plate and sheet. It defines the specifications and application of intense pressure vessel steel plates and sheets mainly used in applications such as pressure vessels, steel bridge components and other general structural applications. Aside from being the base material for pressure vessels such as those found in chemical and petrochemical plant, JIS G3115 SPV450 can also be used for items in engineering structures and components for industries like energy, ships, transportation tools, and construction machinery.
Smelting temperature:1975°C - 1399°C
Application:Pressure vessel steel plate used at medium temperature
JIS G3115 SPV450 Material Chemical Composition
The chemical composition of the JIS G3115 SPV450 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.7500 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Manganese (Mn) | - | 1.6000 |
| (CEV) | - | 0.4400 |
| Carbon (C) | - | 0.1800 |
JIS G3115 SPV450 Material Mechanical Properties
JIS G3115 steels are made of low-carbon-manganese-molybdenum-chromium alloys and have superior mechanical properties such as high yield and tensile strengths, good fatigue strength and impact toughness. They also have excellent cold formability and weldability properties. These steels are ideal for applications such as pressure vessel production, shipbuilding, and construction.
The mechanical properties of the JIS G3115 SPV450 steel are as follows:
| YieldRp0.2 | ≤ 554 (MPa) |
| TeileRm | ≤ 664 (MPa) |
| ImpactKV/Ku | 14(J) |
| ElongationA | 32% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 314 |
JIS G3115 SPV450 Material Thermal Properties
The thermal performance parameters of the JIS G3115 SPV450 steel are as follows:
| Temperature (°C) | 42 | 498 | 196 |
| Modulus of elasticity (GPa) | - | 859 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 344 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 333 |
| Poisson’s coefficient, ν | - | - | 343 |
JIS G3115 SPV450 Material Machining Technology
JIS G3115 SPV450 steel is a low alloy steel that has excellent strength, ductility, and weldability. It has a tensile strength of between 510 and 800MPa and is primarily used in the construction, engineering, and automobile industries. JIS G3115 SPV450 steel is also known for its excellent machinability and is often used for parts that require intricate designs or shapes.