51Si7
France AFNOR 51Si7 Carbide for cutting tools and 51Si7 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Tool Steel And Hard Alloy | 51Si7 | AFNOR | France | Carbide for cutting tools |
| 40CrMnMo8 | |||||
| 42CrMo4 | |||||
| 42CrMo4 | |||||
| 45SiCrMo6 | |||||
| 45SiCrMo6 | |||||
| 45WCrV8 | |||||
| 45WCrV8 | |||||
| 46Si7 | |||||
| 46Si7 | |||||
| 51Si7 |
Chemical composition(mass fraction)(wt.%) of the 51Si7
Mechanical Properties of steel grade 51Si7
| 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) |
|---|---|---|---|---|---|---|
| 621 (≥) | 436 (≥) | 34 | 13 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 |
Physical Properties of steel grade 51Si7
| 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 |
|---|---|---|---|---|---|---|---|
| 21 | – | – | 0.11 | – | |||
| 695 | 146 | – | 13.3 | 341 | – | ||
| 461 | – | 44 | 23.2 | 222 | 231 |
Heat Treatment of steel grade 51Si7
Heat treated : 1394°C – 1398°C
Technological Curves of steel grade 51Si7
No Curve