Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 1172-1999 |
Conversion of hardness and strength for ferrous metal 黑色金属硬度及强度换算值 |
China National Standards Conversion hardness strength |
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GB/T 3771-1983 |
Conversion of hardness and strength for copper alloys 铜合金硬度与强度换算值 |
China National Standards Conversion hardness strength |
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