France AFNOR SF Carbide for cutting tools and SF Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Tool Steel And Hard Alloy | SF | AFNOR | France | Carbide for cutting tools | 
| S20 | |||||
| S25 | |||||
| S25 | |||||
| S30 | |||||
| S30 | |||||
| S40 | |||||
| S40 | |||||
| SD2 | |||||
| SD2 | |||||
| SF | 
| 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) | 
|---|---|---|---|---|---|---|
| 194 (≥) | 626 (≥) | 22 | 22 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 22 | - | - | 0.42 | - | |||
| 472 | 839 | - | 31.3 | 334 | - | ||
| 784 | - | 33 | 24.2 | 133 | 212 | 
Heat treated : 1663°C - 1348°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| Stellite SF1 | USA | Stellite alloy | |
| Stellite SF6 | USA | Stellite alloy | |
| Stellite SF12 | USA | Stellite alloy | |
| Stellite SF20 | USA | Stellite alloy | |
| SF | AFNOR | France | Carbide for cutting tools | 
| SF | AFNOR | France | Carbide for cutting tools | 
| SUS310SFB | JIS | Japan | austenitic special steel | 
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