USA UNS SAE AMS-S-8949B (1998), D6AC Specialsteel Steel Bars, Plates, Sheets, Billets, and Reforging Stock Type D6AC and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | D6AC | Precipitation-Hardening | UNS | USA | Steel Bars, Plates, Sheets, Billets, and Reforging Stock Type D6AC | 
| C | Si | Mn | P | S | Ni | Cr | Al | Cu | Ti | Fe | Mo | Co | V | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.47 | ≤0.22 | ≤0.75 | ≤ ≥ | ≤ ≥ | ≤0.55 | ≤1.05 | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤remaining | ≤1.00 | ≤ ≥ | ≤0.10 | 
| 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) | 
|---|---|---|---|---|---|---|
| 542 (≥) | 688 (≥) | 42 | 34 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.12 | - | |||
| 598 | 159 | - | 34.3 | 222 | - | ||
| 732 | - | 34 | 32.2 | 231 | 231 | 
Heat treated : 1473°C - 1618°C
| SAE AMS-S-8949B (1998) | Steel Bars, Plates, Sheets, Billets, and Reforging Stock Type D6AC | SAE-AMS-S-8949B-(1998).pdf | 
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