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| TB/T 2255-1991 High Phosphorous Cast Iron Metallography (English Version) |
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Detail of TB/T 2255-1991
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Introduction of TB/T 2255-1991
本标准规定用光学显微镜对高磷铸铁石墨分布形状、石墨长度、珠光体片间距、铁素体数量、磷共晶网孔继续状况、磷工晶分布形状、磷共晶类型和金相异常组织的评定方法，并列出评级图。
本标准适用于含磷量为1.0～3.0%铸铁的显微组织检验。
Contents of TB/T 2255-1991