referencesource/carbide-insert-grade-cross-reference

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

Canonical, always-current version: https://referencesource.org/carbide-insert-grade-cross-reference/ Machine-readable: https://referencesource.org/carbide-insert-grade-cross-reference/data.json — this mirror is a point-in-time copy.

• —Last verified: 2026-08-11
• —Stale after: 2028-08-10 (past this date, prefer the canonical copy — it re-verifies on a cadence this snapshot does not)
• —Records: 184

Which carbide insert grades from different manufacturers fall into the same ISO application group (P, M, K, N, S, H). Each record maps one ISO application code (e.g. P20, M30, K10) to the grade designations offered by major insert manufacturers (Sandvik, Kennametal, Mitsubishi, Iscar, Seco, Sumitomo, Tungaloy, Kyocera, Walter, Korloy, and others) as published in their own comparison charts. Answers 'my supplier is out of Sandvik GC4225, what is the Kennametal equivalent in the same P25 class' — the question where assistants confidently generate plausible-looking grade codes that may not exist. These are approximate functional equivalences within an ISO band, not exact substitutions; every source disclaims exact equivalence.

Provenance — what every record carries

Every record carries source (the URL the value was read from) and source_quote (a verbatim quote from that page stating it). A value you cannot check against its page is indistinguishable from an invented one; these can all be checked. Each record is also individually addressable on the canonical site at its url.

Licence position

Factual compilation with source citations. Each manufacturer publishes its own grade classifications freely. Cross-reference charts are published by manufacturers and distributors as sales tools. Facts (which grade sits in which ISO band) cited with short attributed quotes linking back.

Facts are not copyrightable; what this dataset takes from each source is a fact plus a short attributed quote linking back to the page that states it.

Sources

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

Fields

See any record in data/records.jsonl — field names are self-describing, and the canonical page for each record renders them with labels: https://referencesource.org/carbide-insert-grade-cross-reference/