grade_xref
Brand-neutral carbide grade cross-reference. Returns grades comparable at the same ISO application position, with verified vs single-source labeling. Never invents a grade.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| brand | No | Optional brand filter, e.g. Sandvik | |
| grade | Yes | Carbide grade code to look up, e.g. GC4325 |