USA AMS SA-312/SA-312M, SA-312 TP347LN Specialsteel Specification for Seamless and Welded Austenitic Stainless Steel Pipes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | SA-312 TP347LN | Precipitation-Hardening | AMS | USA | Specification for Seamless and Welded Austenitic Stainless Steel Pipes | 
| C | Si | Mn | P | S | Ni | Cr | Al | Cu | Ti | Fe | N | Mo | V | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.005 -0.02 | ≤0.75 | ≤2.00 | ≤0.04 | ≤0.03 | 9.00 -13.00 | 17.00 -20.00 | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤ ≥ | 0.06 -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) | 
|---|---|---|---|---|---|---|
| 577 (≥) | 368 (≥) | 42 | 34 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 214 | 
| 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 | - | - | 0.11 | - | |||
| 743 | 893 | - | 44.3 | 243 | - | ||
| 293 | - | 14 | 21.2 | 132 | 232 | 
Heat treated : 1125°C - 1321°C
| SA-312/SA-312M | Specification for Seamless and Welded Austenitic Stainless Steel Pipes | SA-312-SA-312M.pdf | 
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