Heye HYM4 Knife Steel
Composition Analysis Graph, Equivalents And Overview

Version 4.36
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HYM4(Heye) - Equivalent of the AISI M4 high sped tool steel. Higher toughness at the same hardness compared to AISI M2 tool steel. Very popular as competition cutting steel of choice. Mainly used in custom knives, however several makers including Benchmade and Spyderco made limited runs of their knives out of Crucible CPM M4.

Manufacturing Technology - Ingot

Country - China(CN)

NOTE - Approximate composition based on manufacturer's or standard reference information and other alloys in the same reference group is shown.

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