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1.3343

HS6-5-2C

1.3343 (HS6-5-2C) is the most commonly used [[glossary:schnellarbeitsstahl|high-speed steel]] (HSS): 6 % [[element:W|tungsten]], 5 % [[element:Mo|molybdenum]], 4 % [[element:Cr|chromium]] and 2 % [[element:V|vanadium]]. Its trademark is [[glossary:sekundaerhaertung|secondary hardening]]: on [[glossary:anlassen|tempering]] above 500 °C, fine [[glossary:karbid|carbides]] form that harden the steel again — so it keeps cutting even when the edge gets hot. The standard for drills, milling cutters and saw blades.

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