ALLOY steel: a steel containing iron and carbide plus one or more other metals such as nickel, chromium, or molybdenum.
合金钢：指钢中含有铁，碳，以及镍、铬、钼等一种或多种其他的合金元素。
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Alloy steel owe their properties to the presence of one or more elements other than carbon, namely nickel, chromium, manganese, molybdenum, tungsten, silicon, vanadium, and copper.