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1.适用范围本规格主要对潜艇上使用的超高强度锻钢件(以下简称锻钢件)作出规定。备注:在本规格中附加〔 〕所表示的单位和数值,是采用国际单位制(SI)的单位和数值, 记录作参考。2.牌号牌号如表1规定。
1. Scope This specification is mainly used on submarines for ultra-high strength forgings (hereinafter referred to forgings) to make provisions. Note: Units and values indicated by the addition of [] in this specification refer to the units and values of the International System of Units (SI) for reference. 2. Grades as shown in Table 1.