DIN 17350 S3-3-2 Introduce
DIN 17350 S3-3-2 steel is an alloy steel that is widely used in the automotive and aerospace industries due to its impressive thermal properties. It has a high thermal conductivity, thermal diffusivity, and resistance to thermal fatigue cracking, which makes it an ideal choice for applications that require these qualities.
Smelting temperature:1942°C - 1646°C
Application:Tool Steels; Technical Conditions of Delivery
DIN 17350 S3-3-2 Material Chemical Composition
The chemical composition of the DIN 17350 S3-3-2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Tungsten (W) | 2.7000 | 3.0000 |
| Vanadium (V) | 2.2000 | 2.5000 |
| Silicon (Si) | - | 0.4500 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Molybdenum (Mo) | 2.5000 | 2.8000 |
| Manganese (Mn) | - | 0.4000 |
| Chromium (Cr) | 3.8000 | 4.5000 |
| Carbon (C) | 0.9500 | 1.0300 |
DIN 17350 S3-3-2 Material Mechanical Properties
The mechanical properties of the DIN 17350 S3-3-2 steel are as follows:
| YieldRp0.2 | ≤ 357 (MPa) |
| TeileRm | ≤ 784 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 232 |
DIN 17350 S3-3-2 Material Thermal Properties
The thermal performance parameters of the DIN 17350 S3-3-2 steel are as follows:
| Temperature (°C) | 13 | 338 | 514 |
| Modulus of elasticity (GPa) | - | 136 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 232 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 333 |
| Poisson’s coefficient, ν | - | - | 332 |