JIS SPV 32 JIS G3115
Boiler and Pressure Vessel Steel Product Introduction
JIS SPV 32 JIS G3115 steel is a Japanese industrial standard for low- and intermediate-tension carbon steel plates for pressure vessels in the manufacturing and construction industry. It emphasizes on quality and performance in essential areas such as strength, elongation, weldability, and corrosion resistance. This steel provides many advantages over other types of steel, including its exceptional strength, reliable weldability, and good corrosion resistance. It also has a low cost compared to other steels and is available in three main categories; steel plates with low, medium, and high-tensile strength. As such, JIS SPV 32 JIS G3115 steel is an ideal choice for a variety of pressure vessel applications.
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Application: Pressure vessel steel plate used at medium temperature.
Heat treated: 1826°C - 1142°C.
Boiler and Pressure Vessel Steel Product Details
JIS SPV 32 JIS G3115 Chemical element
JIS SPV 32 JIS G3115 in addition to carbon, steel also contains a small amount of manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), oxygen (O), nitrogen (N) and hydrogen (H). These elements are not intentionally added to improve the quality of steel, but are brought in by ore and smelting process, so they are called impurity elements. These impurities have a certain impact on the properties of steel. In order to ensure the quality of steel, the chemical composition of all kinds of steel is strictly stipulated in technical standards.
The main elements proportion is as below:
| Element | Min | Max | Similar |
|---|---|---|---|
| Si | 0.1500 | 0.5500 | - |
| S | - | 0.0300 | - |
| P | - | 0.0300 | - |
| Mn | - | 1.5000 | - |
| C | - | 0.1800 | - |
JIS SPV 32 JIS G3115 Mechanical properties
There are three main categories of JIS SPV 32 JIS G3115 steel; steel plates with low-tensile strength, those with medium-tensile strength and those with high-tensile strength. Low-tensile steel plates have a tensile strength of up to 270MPa and are most commonly used in the production of boilers, container-parts, shells, and light regional ships. Medium-tensile steel plates have a tensile strength of up to 510MPa and are primarily used for intermediate-pressure vessels due to their high levels of toughness. High-tensile steel plates have a tensile strength of up to 760MPa and are mostly used in the production of high-pressure vessels for the oil and gas industry and in petrochemical plants.
The mechanical properties of JIS SPV 32 JIS G3115 metals determine the range of usefulness of a material and establish the service life that can be expected. Mechanical properties are also used to help classify and identify material.
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 544 (≥) | 548 (≥) | 12 | 22 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 |
JIS SPV 32 JIS G3115 Physical properties
The following lists give JIS SPV 32 JIS G3115 properties such as physical properties, density, thermal expansion.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.14 | - | |||
| 181 | 335 | - | 32.3 | 113 | - | ||
| 152 | - | 24 | 21.2 | 133 | 322 |
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