ASME SA-249/SA-249M TP316LN Introduce
ASME SA-249/SA-249M TP316LN 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:1579°C - 1461°C
Application:Welded austenitic steel tubes for boilers, superheaters, heat exchangers and condensers
ASME SA-249/SA-249M TP316LN Material Mechanical Properties
The mechanical properties of the ASME SA-249/SA-249M TP316LN steel are as follows:
| YieldRp0.2 | ≤ 172 (MPa) |
| TeileRm | ≤ 799 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 111 |
ASME SA-249/SA-249M TP316LN Material Thermal Properties
The thermal performance parameters of the ASME SA-249/SA-249M TP316LN steel are as follows:
| Temperature (°C) | 43 | 963 | 333 |
| Modulus of elasticity (GPa) | - | 919 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 344 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 424 |
| Poisson’s coefficient, ν | - | - | 342 |