USA AMS SB-247, SB-247 2618 Specialsteel Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | SB-247 2618 | Precipitation-Hardening | AMS | USA | Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings |
C | Si | Mn | P | S | Ni | Cr | Al | Cu | Ti | Fe | N | Mo |
---|---|---|---|---|---|---|---|---|---|---|---|---|
≤0.06 | ≤0.75 | ≤0.75 | ≤ ≥ | ≤ ≥ | ≤0.50 | 25.00 -27.00 | ≤ ≥ | ≤0.20 | ≤ ≥ | ≤ ≥ | ≤0.04 | 0.75 -1.50 |
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) |
---|---|---|---|---|---|---|
298 (≥) | 354 (≥) | 43 | 21 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
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 |
---|---|---|---|---|---|---|---|
43 | - | - | 0.33 | - | |||
979 | 168 | - | 23.3 | 243 | - | ||
246 | - | 24 | 23.2 | 121 | 222 |
Heat treated : 1963°C - 1637°C
SB-247 | Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings | SB-247.pdf |
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