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本标准足根据(84)国标发232号文,参照采用国外先进标准ASTM:E208,在充分分析了国内外大量资枓的基础上结合国内多年来的试验研究和实践经验制定的。该标准适用于铁素体钢无塑性转变温度的测定。基本条款和ASTM:E208是一致的。根据实际工程的需要主要增加了P_4、P_5、和P_6三型辅助试样和焊接接头落锤试样作为附录参考使用。还对某些内容进行了必要的增删和修改。
This standard is based on (84) GB No. 232, with reference to the use of advanced foreign standards ASTM: E208, based on a full analysis of a large number of domestic and foreign capital, combined with many years of experimental research and practical experience. This standard applies to the determination of non-ductile transition temperature of ferritic steel. The basic terms and ASTM: E208 is consistent. According to the actual needs of the project increased mainly P_4, P_5, and P_6 three types of auxiliary samples and drop samples of welded joints as an appendix reference. It also made necessary additions and deletions to certain elements.