USA AMS SB-649, SB-649 N08925 Specialsteel Specification for Ni-Fe-Cr-Mo-Cu Low-Carbon Alloy (UNS N08904), Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | SB-649 N08925 | Austenite | AMS | USA | Specification for Ni-Fe-Cr-Mo-Cu Low-Carbon Alloy (UNS N08904), Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire | 
| C | Mn | Si | P | S | Cr | Ni | Mo | Cu | N | 
|---|---|---|---|---|---|---|---|---|---|
| ≤0.02 | ≤1.00 | ≤0.50 | ≤0.045 | ≤0.03 | 24.00 -26.00 | 19.00 -21.00 | 6.00 -7.00 | 0.80 -1.50 | 0.10 -0.20 | 
| 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) | 
|---|---|---|---|---|---|---|
| 394 (≥) | 652 (≥) | 31 | 13 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 322 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.33 | - | |||
| 856 | 266 | - | 43.3 | 144 | - | ||
| 448 | - | 41 | 44.2 | 342 | 221 | 
Heat treated : 1795°C - 1218°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| Cronifer 2803 Mo | |||
| CrOnifer 1925 hMO(N08925) | |||
| JS 1925 6Mo | 
| SB-649 | Specification for Ni-Fe-Cr-Mo-Cu Low-Carbon Alloy (UNS N08904), Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire | SB-649.pdf | 
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