[GB/T 3488-1983] 硬质合金 显微组织的金相测定[已作废]
发布时间:1983-02-21
实施时间:1983-01-02
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[GB/T 3489-1983] 硬质合金 孔隙度和非化合碳的金相测定[已作废]
发布时间:1983-02-21
实施时间:1983-01-02
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[GB 3490-1983] 含铜贵金属材料氧化铜金相检验方法[现行]
发布时间:1983-02-21
实施时间:1983-12-01
本标准适用于航空电器仪表用的电接触含铜贵金属合金中的氧化亚铜金相试验。
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[GB/T 2971-1982] 碳素钢和低合金钢断口检验方法[已作废]
发布时间:1982-03-25
实施时间:1982-01-02
本标准规定的断口检验方法,适用于碳素结构钢、低合金结构钢的钢板、条钢和型钢。也可供其它钢断口检验参考..
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[HB 5177-1981] 金属丝材拉伸试验方法[已作废]
发布时间:1981-07-15
实施时间:1981-12-01
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[HB 5176-1981] 金属丝材缠绕试验方法[已作废]
发布时间:1981-07-15
实施时间:1981-12-01
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[HB 5178-1981] 金属板、带材反复弯曲试验方法[已作废]
发布时间:1981-07-15
实施时间:1981-12-01
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[HB 5175-1981] 金属丝材反复弯曲试验方法[已作废]
发布时间:1981-07-15
实施时间:1981-12-01
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[GB/T 1979-1980] 结构钢低倍组织缺陷评级图[已作废]
发布时间:1981-05-01
实施时间:1981-05-01
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[HB 5152-1980] 金属室温旋转弯曲疲劳试验方法[已作废]
发布时间:1980-11-10
实施时间:1981-01-01
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[HB 5153-1980] 金属高温旋转弯曲疲劳试验方法[已作废]
发布时间:1980-11-10
实施时间:1981-01-01
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发布时间:1979-01-02
实施时间:1980-09-01
本标准适用于结构钢、滚珠钢、工具钢及弹簧钢的热轧、锻造、冷拉条钢和钢坯。其它钢类要求作断口检验时,可..
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[GB/T 4156-2020] 金属材料 薄板和薄带 埃里克森杯突试验[现行]
发布时间:2020-03-31
实施时间:2020-10-01
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