JIS G3445 STKM12A Introduce
JIS G3445 STKM12A can be used in a variety of applications that require a strong and reliable steel. Some of the most common applications are in construction, automotive, vehicle components, pipes and tubes. The steel is particularly suited to these types of applications because of its strength and flexibility.JIS G3445 STKM12A grade steel is an excellent choice for any application where strength, durability and corrosion resistance are important. It is also an excellent choice for applications that require a steel that is both strong and flexible.
Smelting temperature:1691°C - 1755°C
Application:Carbon steel pipe for mechanical structure
JIS G3445 STKM12A Material Mechanical Properties
The JIS G3445 STKM12A alloy also has outstanding fatigue resistance and excellent corrosion resistance, especially when exposed to salt water or other forms of corrosive vapors. It is known to resist a wide range of chemicals, including various alkalis and acids, making it suitable for use in chemical processing and medical equipment. Its low cost and long service life make it an ideal choice for many industries.
The mechanical properties of the JIS G3445 STKM12A steel are as follows:
| YieldRp0.2 | ≤ 965 (MPa) |
| TeileRm | ≤ 119 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 33% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 123 |
JIS G3445 STKM12A Material Thermal Properties
The thermal performance parameters of the JIS G3445 STKM12A steel are as follows:
| Temperature (°C) | 11 | 314 | 297 |
| Modulus of elasticity (GPa) | - | 477 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 211 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 314 |
| Poisson’s coefficient, ν | - | - | 323 |
JIS G3445 STKM12A Material Machining Technology
JIS G3445 is a standard of Japanese Industrial Standard that governs the mechanical properties and manufacturing processes of steel tubing. It is a commonly used specification for various applications as it has good strength and ductility. The steel is machined in a number of different operations depending on the end use.