# M30 — Carbide insert grade cross-reference by ISO application group and manufacturer

For M30, manufacturer is Walter; grade designation(s) is WAP25 WXM25 WAM30 WTP35 WTA51 WXM35 WXK35 WXP40, recorded from its source on 2026-08-11.

- **ISO application code:** M30 _(verified: appears in the quote below)_
- **Manufacturer:** Walter _(our reading, not quoted from the source)_
- **Grade designation(s):** WAP25 WXM25 WAM30 WTP35 WTA51 WXM35 WXK35 WXP40 _(verified: appears in the quote below)_

## What the source says

> M30 | R-300 | US735 F620 F730 AP15TF | GC1020 GC1120 GC2035 GC2135 GC2040 | T25M TP300 CP50 F30M | AC3000 AC325 ACZ330 | T6030 T335S T325 AH740 AH120 | CS5(KC7015) KC9240 KC7025 KC9040 KC720 KC8050 CD4 KC7935 | IC328 IC3028 | | WAP25 WXM25 WAM30 WTP35 WTA51 WXM35 WXK35 WXP40 |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Grade designation(s)

romaycorp.com says grade designation(s) is **WAP25 WXM25 WAM30 WTP35 WTA51 WXM35 WXK35 WXP40**, as of 2026-08-11.

> M30 | R-300 | US735 F620 F730 AP15TF | GC1020 GC1120 GC2035 GC2135 GC2040 | T25M TP300 CP50 F30M | AC3000 AC325 ACZ330 | T6030 T335S T325 AH740 AH120 | CS5(KC7015) KC9240 KC7025 KC9040 KC720 KC8050 CD4 KC7935 | IC328 IC3028 | | WAP25 WXM25 WAM30 WTP35 WTA51 WXM35 WXK35 WXP40 |

Source: https://romaycorp.com/charts/carbide-comparison-chart/

aceratool.com says grade designation(s) is **WAM30**, as of 2026-08-11.

> M30 | AC2115 AC21125 | GC2135 GC235 | PC9030 NC3030 | TT3500 | WAM30 |

Source: https://www.aceratool.com/carbide-insert-grades-chart/


## Source

- https://romaycorp.com/charts/carbide-comparison-chart/
- https://www.aceratool.com/carbide-insert-grades-chart/

Last verified: 2026-08-11. Review by: 2028-08-10.
Part of [Carbide insert grade cross-reference by ISO application group and manufacturer](https://referencesource.org/industrial-consumable-tooling-cross-reference/).