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Sumitomo

Sumitomo AC420K: equivalent grades from other brands

CVD coated, turning grade. The makers' comparison tables place it at K20 (cast iron): 3 of 3 tables. The best-confirmed equivalents are Sandvik GC3225, Kennametal KCK20, Tungaloy T5115, Kyocera CA320.

ISO AREAK20cast iron
TYPECVD coatedturning
TABLES THAT AGREE3 of 3place AC420K at K20

Equivalents at K20 · CVD coated, turning

BrandEquivalent (tables agreeing)Other candidates
SandvikGC3225 (3 of 3)GC4225, GC3215, GC3220
KennametalKCK20, KCK20B (3 of 3)KC9125, KC9325, KC9320
SecoTK1501 (2 of 3)TP200, TK2000, TX150
IscarIC5010 (2 of 3)IC8150, IC9150, IC418, IC9015
WalterWKK20S, WKV20, WAK20 (1 of 3)—
MitsubishiMY5015, MC5125, MC5015, UC5115 (2 of 3)MH515, UE6110, UE6010
TungaloyT5115, T5125 (3 of 3)T515, T5020
KyoceraCA320 (3 of 3)CA4515, CA315
CeratizitCTCK120, CTCP115 (1 of 3)—
DijetJC110V, JC215V, JC605W, JC108W (1 of 3)—
NTKCP1, CP2, CP5 (1 of 3)—
TaeguTecTT7015, TT7025, TT7310 (1 of 3)—

Where each table places it

Kyocera (2021)K20
Mitsubishi (2025-27)K20
Tungaloy (2023-24)K20

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 Sumitomo AC420K?

GC3225, confirmed by 3 of 3 tables at K20.

What is the Iscar equivalent of Sumitomo AC420K?

IC5010, confirmed by 2 of 3 tables at K20.

What material is Sumitomo AC420K for?

For cast iron: the comparison tables place it at ISO K20.

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