JIS C2553 M140-30S5 Introduce
JIS C2553 M140-30S5 is a low alloy steel. It contains a small amount of alloying elements, such as Mn and Ni, which can be added to improve the mechanical properties of the steel. Its main ingredients are C and Si, so its welding performance and machinability are good. JIS C2553 M140-30S5 is mainly used for the manufacture of machinery parts, such as gears, shafts, spindles, wheels, some construction machinery, car chassis, and so on. It is also used for boiler and pressure vessel components, tools, agricultural machinery, and shipbuilding steels.
Smelting temperature:1616°C - 1719°C
Application:Fully processed state to deliver cold rolled grain oriented electrical steel strips and sheets
JIS C2553 M140-30S5 Material Mechanical Properties
The mechanical properties of the JIS C2553 M140-30S5 steel are as follows:
| YieldRp0.2 | ≤ 836 (MPa) |
| TeileRm | ≤ 446 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 32% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 421 |
JIS C2553 M140-30S5 Material Thermal Properties
The thermal performance parameters of the JIS C2553 M140-30S5 steel are as follows:
| Temperature (°C) | 43 | 582 | 214 |
| Modulus of elasticity (GPa) | - | 286 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 211 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 241 |
| Poisson’s coefficient, ν | - | - | 422 |