Sumitomo Carbide Grades Charts

Sumitomo Turning Grades Chart

Sumitomo Milling (Indexable) Grades Chart

Watch the Video:
"How to use the Carbide Grades Information"
and get the most out of this page!

Sumitomo Parting Off Grades Chart

Sumitomo Grooving Grades Chart

How to understand and make the most out of our Grade Tables

  • We use the PMK convention that is used in most of the cutting tool catalogs. (Example P05-15, K25-40, etc.). If you are not familiar with it, please read our Detailed Explanation.
  • We divide the grades into several "Grade Statuses":
    • Active Main Grades - These are the primary grades of each brand.
    • Active complimentary Grades - These are additional possibilities, either older or used for specific situations.
    • You can use the filter above the table to view both or one of them.
    • In addition, we list on the bottom of the page additional older and non-active grades.

Sumitomo Older Non-Active Grades

A list of additional older grades that are no longer in the Catalog, or had been replaced with modern generation grades.

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