# M20 — Carbide insert grade cross-reference by ISO application group and manufacturer

For M20, manufacturer is Seco; grade designation(s) is TP200 CP50 T250M T25M F25M, recorded from its source on 2026-08-11.

- **ISO application code:** M20 _(verified: appears in the quote below)_
- **Manufacturer:** Seco _(our reading, not quoted from the source)_
- **Grade designation(s):** TP200 CP50 T250M T25M F25M _(verified: appears in the quote below)_

## What the source says

> M20 | R-300 | US7020 F620 F7030 AP20M UP20M | GC1020 GC2025 GC2030 GC4125 GC3040 | TP200 CP50 T250M T25M F25M |

## 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 **TP200 CP50 T250M T25M F25M**, as of 2026-08-11.

> M20 | R-300 | US7020 F620 F7030 AP20M UP20M | GC1020 GC2025 GC2030 GC4125 GC3040 | TP200 CP50 T250M T25M F25M |

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

aceratool.com says grade designation(s) is **TP200 TP3000 T250M TM2000**, as of 2026-08-11.

> M20 | AC2115 | GC2025 | NC9020 PC9030 | TT2500 | WAM20 | US7020 F7030 | AC610M AC630M | T6020 T9025 | CA6525 CA6015 | JC110V JC1341 JC215V JC730U | GM8020 | KC9225 KC9025 KC8050 KC9125 | TP200 TP3000 T250M TM2000 |

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/).