本规范涵盖一种以棒材、锻件和锻坯形式存在的易加工耐腐蚀钢。这些产品通常用于加工量保证使用易加工等级的钢的零件，要求具有类似于18-8型钢的耐腐蚀性，但在制造或使用期间，温度不超过700华氏度（371摄氏度），但使用不限于此类应用。

This specification covers one type of free-machining, corrosion-resistant steel in the form of bars, forgings, and forging stock.These products have been used typically for parts on which the amount of machining warrants use of a free-machining grade of steel, requiring corrosion resistance similar to the 18-8 type of steel, but not subjected to temperatures exceeding 700 \mDF (371 \mDC) during fabrication or in service, but usage is not limited to such applications.