1. Summary
Compared with 445, it has high Cr, low carbon, and added Mo to ensure high corrosion resistance.
2. Features
1) High corrosion resistance;
2) Weather resistance;
3) High strength;
4) Magnetic;
5) Cannot be hardened by heat treatment.
3. Scope of application
Stainless steel is used for exterior decoration of large public buildings in coastal and industrial areas.
4. Chemical composition (wt%)
| Grade | C | Cr | P | S | Mo | N | Other |
|---|---|---|---|---|---|---|---|
| 446 | 0.007 | 25.7 | 0.012 | 0.007 | 0.8 | 0.01 | Mn:0.2 |
5. Performance
Grade | YS（MPa） | TS（MPa） | EL | HV |
446 | 335 | 538 | 30 | 167 |
6. Physical properties
Density (g/cm3) | Magnetic | Specific heat250C (J/kg.0C) | Thermal conductivity 1000C(W/m. 0C) | Thermal expansion rate 20~1000C (10-6/0C) |
7.75 | With | 500 | 18.4 | 11.0 |
7. Use status
Annealing and solid solution state:
2D, 2B, and other surface treatment states.
8. Heat treatment
Melting point:1425~1510℃;
Solution treatment: 760~830℃.