AISI M35 Cobalt-Bearing High-Speed Steel
AISI M35 — 5 % Co M2 modification, hot hardness HRC 60 at 600 °C. Compare with M2 and M42 for high-speed slitter blades (>800 m/min).
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AISI M42 Cobalt-Bearing Super High-Speed Steel
AISI M42 (UNS T11342) — 8 % Co super HSS, HRC 65–69, hot hardness HRC 60–62 at 600 °C. Compare with M35 and T15.
AISI M50 High-Speed Steel for Bearings
AISI M50 (UNS T11350) — Cr-V-Mo HSS for bearings, HRC 64–66, low distortion. Compare with M2 for high-RPM cutting tools.
AISI 440C Stainless Steel
AISI 440C is the standard martensitic stainless steel for industrial cutting tools, bearings and food-contact blades. High-carbon, 17 % Cr.
AISI D2 Cold-Work Tool Steel
AISI D2 is a high-carbon, high-chromium cold-work tool steel widely used for industrial slitter, shear and granulator blades.
AISI M2 (T11302) High-Speed Steel
AISI M2 is the workhorse high-speed steel of the converting and slitting industry. Molybdenum-tungsten-vanadium tool steel, hardened to HRC 62–65.