JIS G3468 SUS 329J4 LTPY Introduce
JIS G3468 SUS 329J4 LTPY is a type of magnetic alloy steel produced in Japan for use in a variety of industrial machinery and equipment. It is commonly used for components of manufacturing processes in machines that involve high temperatures and pressures, including motors for autos, turbines for aircraft, and pumps for industrial systems. JIS G3468 SUS 329J4 LTPY is characterized by superior hardness, weldability, ductility, and corrosion resistance, making it an ideal material to use in demanding environments.
Smelting temperature:1655°C - 1981°C
Application:Large size welded seamless welded steel pipe
JIS G3468 SUS 329J4 LTPY Material Chemical Composition
The chemical composition of the JIS G3468 SUS 329J4 LTPY steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0400 |
| Nickel (Ni) | 4.5000 | 6.0000 |
| Nitrogen (N) | 0.0800 | 0.2000 |
| Molybdenum (Mo) | 2.5000 | 3.5000 |
| Manganese (Mn) | - | 2.0000 |
| Chromium (Cr) | 21.0000 | 24.0000 |
| Carbon (C) | - | 0.0300 |
JIS G3468 SUS 329J4 LTPY Material Mechanical Properties
Yield strength is another important mechanical property of JIS G3468 SUS 329J4 LTPY steel. Like tensile strength, it is also affected by the composition of the alloy and the microstructure. It has a yield strength range of 550MPa - 800MPa, which is influenced by the alloying elements, like chromium. The higher the yield strength, the higher the material's resistance to deformation under load.
The mechanical properties of the JIS G3468 SUS 329J4 LTPY steel are as follows:
| YieldRp0.2 | ≤ 599 (MPa) |
| TeileRm | ≤ 128 (MPa) |
| ImpactKV/Ku | 44(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 314 |
JIS G3468 SUS 329J4 LTPY Material Thermal Properties
The thermal performance parameters of the JIS G3468 SUS 329J4 LTPY steel are as follows:
| Temperature (°C) | 31 | 634 | 166 |
| Modulus of elasticity (GPa) | - | 973 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 313 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 333 |
| Poisson’s coefficient, ν | - | - | 341 |
JIS G3468 SUS 329J4 LTPY Material Machining Technology
JIS G3468 SUS 329J4 LTPY is one of the most important materials when it comes to machining. This type of steel is utilized for many applications, including machine parts, tools, tools and accessories, auto parts, and even architecture. JIS G3468 SUS 329J4 LTPY steel is renowned for being an ideal steel for anything that needs precise machining and good surface finish. It has excellent machinability and thermal stability which makes it an ideal choice for many machining applications.