JIS G3115 SPV315 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 SPV315 can also be used for items in engineering structures and components for industries like energy, ships, transportation tools, and construction machinery.
Smelting temperature:1941°C - 1325°C
Application:Pressure vessel steel plate used at medium temperature
JIS G3115 SPV315 Material Chemical Composition
The chemical composition of the JIS G3115 SPV315 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.5500 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Manganese (Mn) | - | 1.6000 |
| (CEV) | - | 0.3900 |
| Carbon (C) | - | 0.1800 |
JIS G3115 SPV315 Material Mechanical Properties
JIS G3115 steel is the Japanese Industrial Standard grade for pressure vessel plates made of low-carbonmanganese-molybdenum-chromium alloy steel. JIS G3115 steel plate is composed of three grades, SPV235, SPV315, and SPV355, which are intended for welded pressure vessel fabrication. JIS G3115 SPV315 steels have superior weldability and good cold formability properties.
The mechanical properties of the JIS G3115 SPV315 steel are as follows:
| YieldRp0.2 | ≤ 514 (MPa) |
| TeileRm | ≤ 573 (MPa) |
| ImpactKV/Ku | 44(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 433 |
JIS G3115 SPV315 Material Thermal Properties
The thermal performance parameters of the JIS G3115 SPV315 steel are as follows:
| Temperature (°C) | 11 | 733 | 236 |
| Modulus of elasticity (GPa) | - | 453 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 311 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 241 |
| Poisson’s coefficient, ν | - | - | 333 |
JIS G3115 SPV315 Material Machining Technology
JIS G3115 SPV315 steel is a low alloy steel that has excellent strength, ductility, and weldability. It can be used in a variety of applications and is a popular choice among many production facilities due to its ability to be machined easily and quickly. As a result, machining of JIS G3115 SPV315 steel is a process that requires specialized tools and knowledge.