FERRITE AND AUSTENITIC FORMING ELEMENTS IN STAINLESS STEELS
| FERRITE FORMING ELEMENTS IN STAINLESS STEELS | ||||||||||
| ELEMENT | 409 | 410 | 202 | 304 | 316 | 316 L | Duplex 2205 | Super duplex | Martensite PH | |
| Fe | 87.195 | 85.53 | 70.26 | 70.995 | 68.995 | 68.045 | 69.82 | 63.69 | 76.71 | |
| Cr | 10.50 | 11.50 | 17 | 18 | 16 | 16 | 22 | 25 | 15 | |
| Mo | 0 | – | – | 0 | 2 | 3 | 3 | 4 | 0 | |
| Si | 1 | 1 | 0.75 | 0.75 | 0.75 | 0.75 | 0 | 0 | 1 | |
| Total | 98.695 | 98.03 | 88.01 | 89.745 | 87.745 | 87.795 | 94.82 | 92.69 | 92.71 | |
| AUSTENITIC FORMING ELEMENTS IN STAINLESS STEELS | ||||||||||
| Ni | 0.05 | 0.75 | 4 | 8 | 10 | 10 | 5 | 7 | 3 | |
| N2 | 0 | 0 | 0.25 | 0.1 | 0.1 | 0.1 | 0.15 | 0.28 | 0 | |
| C | 0.08 | 0.15 | 0.15 | 0.08 | 0.08 | 0.03 | 0.03 | 0.03 | 0.07 | |
| Mn | 1 | 1 | 7.50 | 2 | 2 | 2 | 0 | 0 | 1 | |
| Cu | – | – | – | – | – | – | 0 | 0 | 3 | |
| Total | 1.13 | 1.90 | 11.90 | 10.18 | 12.18 | 12.13 | 5.18 | 7.31 | 7.07 | |
| NON FERRITE AND NON AUSTENITIC FORMING ELEMENTS IN STAINLESS STEELS | ||||||||||
| P | 0.045 | 0.04 | 0.06 | 0.045 | 0.045 | 0.045 | 0 | 0 | 0.04 | |
| S | 0.03 | 0.03 | 0.03 | 0.030 | 0.030 | 0.030 | 0 | 0 | 0.03 | |
| Others | 0.10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.15 | |
| Total | 0.175 | 0.07 | 0.09 | 0.075 | 0.075 | 0.075 | 0 | 0 | 0.22 | |
| Grand total | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
Disclaimer :The table denotes that if Ferritic forming content is more than alloy will have more magnetism and more vulnerable to corrosion. There is no evidence but table indicates that alloy above 90% Ferrite composition is magnetic. This is my own observations, data taken for above charting is on an average.
