JIS G3445 STKM17C Introduce
JIS G3445 STKM17C 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 STKM17C 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:1652°C - 1697°C
Application:Carbon steel pipe for mechanical structure
JIS G3445 STKM17C Material Chemical Composition
The chemical composition of the JIS G3445 STKM17C steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0400 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 0.4000 | 1.0000 |
| Carbon (C) | 0.4500 | 0.5500 |
JIS G3445 STKM17C Material Mechanical Properties
The JIS G3445 STKM17C 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 STKM17C steel are as follows:
| YieldRp0.2 | ≤ 754 (MPa) |
| TeileRm | ≤ 189 (MPa) |
| ImpactKV/Ku | 14(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 231 |
JIS G3445 STKM17C Material Thermal Properties
The thermal performance parameters of the JIS G3445 STKM17C steel are as follows:
| Temperature (°C) | 42 | 478 | 998 |
| Modulus of elasticity (GPa) | - | 153 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 431 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.43 | - | - |
| Deity (kg/dm³) | - | - | 211 |
| Poisson’s coefficient, ν | - | - | 243 |
JIS G3445 STKM17C Material Machining Technology
JIS G3445 STKM17C steel can be heat-treated at high temperatures to increase its strength and other mechanical properties. The alloy is very tolerant of heat up to 800°C. It is normally annealed at around 650°C and cooled slowly in order to recover its strength. On the other hand, when subjected to extreme temperatures, it is known to form martensite, an extremely hard form of steel that has a unique molecular structure. It is ideal for use in applications that require tremendous strength and wear resistance, such as high-pressure industrial applications.