uncoated carbide, milling grade. The makers' comparison tables place it at K20 (cast iron): 2 of 2 tables. The best-confirmed equivalents are Sandvik H13A, Iscar IC20, Sumitomo G10E, Kyocera GW25.
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 is the Sandvik equivalent of Seco HX?
H13A, confirmed by 2 of 2 tables at K20.
What is the Iscar equivalent of Seco HX?
IC20, confirmed by 2 of 2 tables at K20.
What material is Seco HX for?
For cast iron: the comparison tables place it at ISO K20.
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