Reference · grade successors
Which grade replaced it? Successors the maker itself lists
12 old → new grade pairs from 2 makers. Every pair is printed in the maker's own document (a catalogue "Old Grades" column or the maker's statement that a new grade replaces the previous one); we link the page. Nothing here is inferred, and a successor listing is not a discontinuation notice. More makers are added as their documents are checked.
Sandvik
| Older grade | Maker-listed newer grade | Application |
|---|---|---|
| GC4315 | GC4415 | ISO P / steel turning / P15 |
| GC4325 | GC4425 | ISO P / steel turning / P25 |
Sumitomo
| Older grade | Maker-listed newer grade | Application |
|---|---|---|
| AC230 | ACP100 | P / steel milling (CVD) |
| AC304 | AC630M | M / stainless steel turning (CVD) |
| AC405K | AC4010K | K / cast iron turning (CVD) |
| AC420K | AC4125K | K / cast iron turning (CVD) |
| AC610M | AC6020M | M / stainless steel turning (CVD) |
| AC700G | AC420K | K / cast iron turning (CVD) |
| AC8015P | AC8115P | P / steel turning (CVD) |
| AC810P | AC8015P | P / steel turning (CVD) |
| AC830P | AC8035P | P / steel turning (CVD) |
| ACP100 | ACP2000 | P / steel milling (CVD) |
Related: Carbide grade chart · Free tool list coverage check