ASME SA-249/SA-249M TP317L Introduce
ASME SA-249/SA-249M TP317L is a specification for Welded Austenitic Steel Boiler, Superheater, Heat Exchanger, and Condenser Tubes. Boiler and pressure vessel grades are made from ferritic, austenitic, and austenitic-ferritic steels including stainless steel alloys. All grades of steel are suitable for use in power plants, refineries, and oil and gas production facilities.
Smelting temperature:1492°C - 1917°C
Application:Welded austenitic steel tubes for boilers, superheaters, heat exchangers and condensers
ASME SA-249/SA-249M TP317L Material Mechanical Properties
The mechanical properties of the ASME SA-249/SA-249M TP317L steel are as follows:
| YieldRp0.2 | ≤ 536 (MPa) |
| TeileRm | ≤ 662 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 112 |
ASME SA-249/SA-249M TP317L Material Thermal Properties
The thermal performance parameters of the ASME SA-249/SA-249M TP317L steel are as follows:
| Temperature (°C) | 11 | 698 | 649 |
| Modulus of elasticity (GPa) | - | 868 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 314 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 121 |
| Poisson’s coefficient, ν | - | - | 322 |