Germany DIN 1.4785 Valve steel and 1.4785 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Special Steel | 1.4785 | DIN | Germany | Valve steel | 
| 1.4704 | |||||
| X45SiCr9-3 | |||||
| 1.4718 | |||||
| X40CrSiMo10-2 | |||||
| 1.4731 | |||||
| X80CrSiMoW15-2 | |||||
| 1.4732 | |||||
| 1.4732 | |||||
| X85CrMoV18-2 | |||||
| 1.4748 | 
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Mo(%) | V(%) | N(%) | Nb(%) | 
|---|---|---|---|---|---|---|---|---|---|---|
| 0.57-0.65 | Max 0.25 | 9.50-11.50 | Max 0.050 | Max 0.025 | 20.00-22.00 | Max 1.50 | 0.75-1.25 | 0.75-1.00 | 0.40-0.60 | 1.00-1.20 | 
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 474 (≥) | 445 (≥) | 23 | 13 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 242 | 
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.41 | - | |||
| 817 | 575 | - | 12.3 | 421 | - | ||
| 273 | - | 43 | 11.2 | 231 | 143 | 
Heat treated : 1858°C - 1953°C
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