# P20 — Carbide insert grade cross-reference by ISO application group and manufacturer

For P20, manufacturer is Sumitomo; grade designation(s) is AC230 AC2000 AC3000, recorded from its source on 2026-08-11.

- **ISO application code:** P20 _(verified: appears in the quote below)_
- **Manufacturer:** Sumitomo _(our reading, not quoted from the source)_
- **Grade designation(s):** AC230 AC2000 AC3000 _(verified: appears in the quote below)_

## What the source says

> P20 | R-200 R-300 | UC6010 UE6020 UC6025 F620 F7030 UP20M AP20M | GC4020 GC4025 GC4225 GC4030 GC3040 | TP200 T250M T25M CP20 F25M | AC230 AC2000 AC3000 |

## 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 **AC230 AC2000 AC3000**, as of 2026-08-11.

> P20 | R-200 R-300 | UC6010 UE6020 UC6025 F620 F7030 UP20M AP20M | GC4020 GC4025 GC4225 GC4030 GC3040 | TP200 T250M T25M CP20 F25M | AC230 AC2000 AC3000 |

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

aceratool.com says grade designation(s) is **AC2000 AC3000 AC820P**, as of 2026-08-11.

> P20 | AC1125 AC1225 | GC4015 GC4225 GC4025 GC4215 LC25 | NC3015 NC3020 NC500H | TT1500 | WAP20 | UC6010 UE6110 UE6020 F7030 | AC2000 AC3000 AC820P |

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/).