USA SAE B 848 (2005), B 848 P/F 4220 Specialsteel Standard Specification for Powder Forged (P/F) Ferrous Materials and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | B 848 P/F 4220 | Precipitation-Hardening | SAE | USA | Standard Specification for Powder Forged (P/F) Ferrous Materials | 
| C | Si | Mn | P | S | Ni | Cr | Al | Cu | Ti | Fe | N | Mo | W | V | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.22 | ≤0.40 | ≤0.75 | ≤ ≥ | ≤ ≥ | ≤0.75 | ≤12.50 | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤remaining | ≤ ≥ | ≤1.00 | ≤1.00 | ≤0.22 | 
| 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) | 
|---|---|---|---|---|---|---|
| 257 (≥) | 581 (≥) | 33 | 31 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.42 | - | |||
| 682 | 666 | - | 13.3 | 223 | - | ||
| 733 | - | 44 | 32.2 | 133 | 343 | 
Heat treated : 1217°C - 1527°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| 1.5422 | |||
| 1.5422 | |||
| S42200 | |||
| S42225 | |||
| S42200 | |||
| S42200 | |||
| 422 | |||
| 422M(C) | |||
| 422M | |||
| S42200 | |||
| SAE 4422 | |||
| UNS G44220 | |||
| ASTM 4422 | |||
| UNS G44220 | |||
| AMS 6422E | |||
| UNS K11422 | |||
| UNS J94224 | |||
| UNS J42215 | |||
| UNS J42220 | |||
| 422(S42200) | 
| B 848 (2005) | Standard Specification for Powder Forged (P/F) Ferrous Materials | B-848-(2005).pdf | 
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