JIS G3468 SUS 329J3 LTPY Introduce
JIS G3468 SUS 329J3 LTPY's characteristics also lead to its use in applications requiring good machinability, durability, and strength such as in high pressure vessels and oil and gas pipelines. This steel is used to produce various parts in high-temperature steam turbine turbines, exhaust valves, and hammer drill bits. In addition, its strength and heat-resistant properties make it a suitable material for engine parts such as bearing arms and gaskets. JIS G3468 SUS 329J3 LTPY is also often used in many other applications in the aerospace industry, weapons, and artillery.
Smelting temperature:1216°C - 1646°C
Application:Large size welded seamless welded steel pipe
JIS G3468 SUS 329J3 LTPY Material Mechanical Properties
Tensile strength is a key indicator of JIS G3468 SUS 329J3 LTPY steel's mechanical properties. This type of steel has a tensile strength range of 700 MPa - 980 MPa. The strength variability results from the different elements used in the alloy and the microstructure of the steel. For instance, adding chromium to the alloying elements increases the tensile strength of the steel. The higher the tensile strength of the material, the better its ability to withstand mechanical loads.
The mechanical properties of the JIS G3468 SUS 329J3 LTPY steel are as follows:
| YieldRp0.2 | ≤ 432 (MPa) |
| TeileRm | ≤ 113 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 324 |
JIS G3468 SUS 329J3 LTPY Material Thermal Properties
The thermal performance parameters of the JIS G3468 SUS 329J3 LTPY steel are as follows:
| Temperature (°C) | 11 | 234 | 347 |
| Modulus of elasticity (GPa) | - | 912 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 242 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.42 | - | - |
| Deity (kg/dm³) | - | - | 443 |
| Poisson’s coefficient, ν | - | - | 322 |
JIS G3468 SUS 329J3 LTPY Material Machining Technology
JIS G3468 SUS 329J3 LTPY steel is used for many applications including machine parts, tools and accessories, auto parts, architecture, and more. It is commonly used for applications that require precise machining and a good surface finish, as well as high heat and corrosion resistance. This type of steel is also suitable for parts that require tight tolerances, strength and high wear resistance.