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Very popular high-speed steel, it can hold its temper even at very high temperatures, and as such is used in industry for high-heat cutting jobs. Not quite knife works, but M2 does have better wear resistance and toughness at the same hardness compared to such a popular knife steel as D2. Makes better blade steel, unless stain resistance is an issue.
Benchmade used to make M2 knives, including AFCK, 710 and Nimravus. Note - Si, S and Mn are taken from Crucible specs. Other makers may have different amount. See versions from Latrobe in this database.
Alternate designations: M2(AISI), A600(ASTM), T11302(UNS), 1.3343(W-Nr), KU(UNI), 06-05-04-02 (AFNOR), SKH9(JIS), 2722(SIS), BM2(BS), W6Mo5Cr4V2(GB), SKH51(JIS), S6-5-2(DIN), M2 Eur(Latrobe), Z85WDCV(AFNOR), Double Six(Latrobe), HS652(EN), 19830(CSN), S600(Bohler-Uddeholm), YXM1(Hitachi), KM1(Kobe Steel), QH51(Sanyo), MH51(Daido), H51(Nihon Koshuha), SKH9(Nahci Fujikoshi), RHM1(Riken Seiko), KM2(Bohler-Uddeholm), ThyRapid3313(Thyssen-Krupp), LO-S 3342(Lohmann), LO-S 3343(Lohmann).