terased, mis võrreldes süsinikterastega sisaldavad selliseid legeerelemente nagu Ni, Cr, Mo jt (üksikult kuni 5%) ja omavad suurepäraseid mehaanilisi omadusi (vrd kõrglegeerteras), a category of ferrous materials that exibit mechanical properties superior to plain carbon steels with such alloying elements as nickel, chromium, and molybdenum etc less than 5% by weight (compare: high-alloy steel)