# P30 — Carbide insert grade cross-reference by ISO application group and manufacturer

For P30, manufacturer is Sandvik; grade designation(s) is GC4025 GC4125 GC4035 GC4030 GC4040, recorded from its source on 2026-08-11.

- **ISO application code:** P30 _(verified: appears in the quote below)_
- **Manufacturer:** Sandvik _(our reading, not quoted from the source)_
- **Grade designation(s):** GC4025 GC4125 GC4035 GC4030 GC4040 _(verified: appears in the quote below)_

## What the source says

> P30 | R-200 | UC6025 UE6035 F7030 AP20M AP15TF | GC4025 GC4125 GC4035 GC4030 GC4040 |

## 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 **GC4025 GC4125 GC4035 GC4030 GC4040**, as of 2026-08-11.

> P30 | R-200 | UC6025 UE6035 F7030 AP20M AP15TF | GC4025 GC4125 GC4035 GC4030 GC4040 |

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

aceratool.com says grade designation(s) is **GC4225 GC4235 GC4025 GC4035 GC2135**, as of 2026-08-11.

> P30 | AC1225 | GC4225 GC4235 GC4025 GC4035 GC2135 |

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/).