uncoated carbide, turning grade. The makers' tables do not agree on where it belongs: Mitsubishi K01/N01, Tungaloy N10/N20. Below are the equivalents table by table; check the Sumitomo catalogue before swapping it.
Note: table built by cross-checking the comparison tables published by Mitsubishi Materials (2025-2027 catalogue), Tungaloy (2023-2024) and Kyocera (2021). Each maker states its table is an estimate based on publications, not approved by the companies named; this one is not approved by them either. Equivalences are indicative: substrate, coating and geometry differ between brands. The catalogue of the grade you use is what counts. Grade names and trademarks belong to their owners.
Frequently asked questions
What material is Sumitomo H1 for?
The comparison tables do not agree: Mitsubishi K01/N01, Tungaloy N10/N20. The maker's catalogue is what counts.
What problem it solved, how much time it saves you, what is missing. We read everything. We only publish with your permission, and only the way you choose.
Thank you. We have it: if you allowed publishing, we will write to you to confirm before it goes online.