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GB/T 39152-2020 English PDF (GBT39152-2020)

GB/T 39152-2020 English PDF (GBT39152-2020)

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GB/T 39152-2020: Test method of the bending stress relaxation for copper and copper alloy
This Standard specifies the method principles, instruments and apparatuses, samples, test conditions, determination of various parameters before the test, test procedures, test data processing, and test reports for the test method of the bending stress relaxation for copper and copper alloy materials. This Standard applies to the determination of the bending stress relaxation properties for copper and copper alloy plates and strips whose thickness is 0.1 mm ~ 1.0 mm under constant strain conditions.

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