USA AMS SB-729, SB-729 N08024 Specialsteel Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | SB-729 N08024 | Austenite | AMS | USA | Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube | 
| C | Mn | Si | P | S | Cr | Ni | Mo | Cu | Nb | 
|---|---|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤1.00 | ≤0.50 | ≤0.035 | ≤0.035 | 22.50 -25.00 | 35.00 -40.00 | 3.50 -5.00 | 0.50 -1.50 | 0.15 -0.35 | 
| 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) | 
|---|---|---|---|---|---|---|
| 478 (≥) | 369 (≥) | 12 | 22 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 242 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 23 | - | - | 0.31 | - | |||
| 853 | 948 | - | 11.3 | 143 | - | ||
| 176 | - | 14 | 32.2 | 424 | 224 | 
Heat treated : 1333°C - 1363°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| 20Cb-3,20Mo-4,20Mo-6 | 
| SB-729 | Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube | SB-729.pdf | 
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