kulumiskindlate masinaosade valmistamiseks kasutatav kroomi, mangaani jt legeerelemente sisaldav kõva kulumiskindel teras (vt kulumiskindlus, Hadfieldi teras, Hardox teras), chromium, manganese and other alloying elements consisting hard and wear resistant steel (see: wear resistance, Hadfield`s steel, Hardox steel)