Stainless steel grade 314 has excellent high-temperature resistance characteristics among the chromium-nickel steels series. The silicon content in this material improves oxidation and carburization resistance; however, it can become very brittle when subjected to prolonged temperatures of 649-816°C (1200- 1500°F).
The following datasheet provides an overview of stainless-steel grade 314.
C Max：0.25%；
Mn Max：2.00%；
P Max：0.045%；
S Max：0.030%；
Si：Max：1.50－3.00%；
Cr：23.00－26.00%；
Ni：19.00－22.00%。
|
Tensile strength |
689 MPa |
99900 psi |
|
Yield strength |
345 MPa |
50000 psi |
|
Modulus of elasticity |
200 GPa |
29000 ksi |
|
Elongation at break (in 50 mm) |
40% |
40% |
|
Hardness, Rockwell B |
85 |
85 |
Stainless steel grade 314 can be heat treated by annealing the material at 1038-1149°C (1900-2100°F), and then quenching in water or rapidly air cooling. Grade 314 steel can be hardened only through cold working. To perform machinability of grade 314, coolant and high-speed turning tools are recommended.
After slowly heating the material to 871°C (1600°F), it should be thoroughly soaked, and then followed by quickly heating to 1093 -1232°C (2000-2250°F) , to perform forging, flanging, or working.
High-Temperature applications
Furnace parts
Furnace conveyor systems
Heat Exchangers