|
C |
Mn |
P |
S |
Si |
Cr |
Ni |
|
≤0.25% |
≤2.00% |
≤0.045% |
≤0.030% |
1.50－3.00% |
23.00－26.00% |
19.00－22.00% |
Chemical Composition
Mechanical Properties
|
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 |
Applications
- High-Temperature applications
- Furnace parts
- Furnace conveyor systems
- Heat Exchangers
Material Summary
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).
Manufacturing Process
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.
