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Chinese Standard: GB/T 24177-2009

Standard test methods for characterizing duplex grain sizes

IDT  ASTM E1181-02

全国钢标准化技术委员会

1.1 本标准规定了判别双重晶粒度的方法。本标准将双重晶粒度分为两大类共六种类型,并分别描述了各类型的特征,提供了相应的表征方法及报告格式。

1.2 本标准仅作为推荐性试验方法,不对材料验收测试的合格级别范围进行规定。

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