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1.2710
X20CrNiMo4
1.2710 (X20CrNiMo4) is a low-alloyed [[glossary:kaltarbeitsstahl|tool steel]] with 0.20 % [[element:C|carbon]], [[element:Cr|chromium]], [[element:Ni|nickel]], and [[element:Mo|molybdenum]] — a [[glossary:einsatzstahl|carburizing steel]] with tool steel character. It is carburized and hardened: hard case, tough core. Use: tools that are hardened in service, gears, highly stressed machine components.