321 grade
321 stainless steel is a kind of material with excellent high temperature stress rupture and creep resistance, and its stress mechanical properties are better than 304 stainless steel.
Chemical Composition and Mechanical Property
Grade | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Ti(%) | N(%) |
| 321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 17.00-19.00 | 9.00-12.00 | ≥5×C% | ≤0.10 |
Grade | tensile strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | rate of reduction in area (%) | Density (g/cm3) | Hardness (HB) (HRB) (HV) |
| 321 | ≥520 | ≥205 | ≥40 | ≥50 | 7.98 | / |
321 Applications
321 austenitic stainless steel has good corrosion resistance in the atmosphere and is widely used in petrochemical, electric power, bridge and automobile industries.
1. Oil waste gas combustion pipeline
2. Engine exhaust pipe
3. Boiler shell, heat exchanger and heating furnace components
4. Silencing components for diesel engines
5. Boiler and pressure vessel
6. Chemical transport vehicles
7. Expansion joint
8. Spiral welded pipe for furnace pipe and dryer
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