NF S 90-451
NF S 90-451 (Medical and surgical equipment. Cutting instruments. Stainless steels. Chemical composition and hardness)· AFNOR NF (France) · 4 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| Z 40 C 14 | 420 F 22 | Stainless steels | chevron_right |
| Z 40 C 14 | 420 F 22 | Tool steels | chevron_right |
| Z 50 CD 13 | 420 F 50 | Stainless steels | chevron_right |
| Z 70 CD 14 | Stainless steels | chevron_right |