DIN SEW 090-2 1.8939 Introduce
DIN SEW 090-2 1.8939 steel is commonly used in various industrial applications as it combines a unique combination of excellent mechanical, physical and chemical properties. Typical applications include aerospace components, automotive suspension parts and springs, tools, and steam and gas turbines. It is also used in the petrochemical and offshore industries.
Smelting temperature:1613°C - 1845°C
Application:High tenacity quenched and tempered fine grain steel. Part 2: Technical delivery conditions for tube and hollow sections
DIN SEW 090-2 1.8939 Material Chemical Composition
The chemical composition of the DIN SEW 090-2 1.8939 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.1200 |
| Silicon (Si) | 0.2000 | 0.5000 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 0.7000 | 1.7000 |
| Niobium (Nb) | - | 0.0500 |
| Molybdenum (Mo) | 0.2000 | 0.5000 |
| Manganese (Mn) | 1.2000 | 1.7000 |
| Copper (Cu) | - | 0.2000 |
| Chromium (Cr) | 0.4000 | 1.0000 |
| Carbon (C) | - | 0.1800 |
DIN SEW 090-2 1.8939 Material Mechanical Properties
The mechanical properties of the DIN SEW 090-2 1.8939 steel are as follows:
| YieldRp0.2 | ≤ 876 (MPa) |
| TeileRm | ≤ 631 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 23% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 431 |
DIN SEW 090-2 1.8939 Material Thermal Properties
The thermal performance parameters of the DIN SEW 090-2 1.8939 steel are as follows:
| Temperature (°C) | 11 | 542 | 827 |
| Modulus of elasticity (GPa) | - | 847 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 231 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 412 |
| Poisson’s coefficient, ν | - | - | 123 |