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See Chinese contents: GB/T 40342-2021 GB/T 40342-2021: Method for determination of aluminum content in hot dipped zinc-aluminum alloy coating on steel wire
This document specifies the principle, reagents, analysis steps, the calculation of analysis results, the calculation of precision, methods of quality assurance and control, and contents of test reports of the chemical titration method for determining aluminum content in hot dipped zinc-aluminum alloy coating on steel wire. This document is applicable to the determination of aluminum content in hot dipped zinc-aluminum alloy coating on steel wire. The measurement range of aluminum content is 2.5%~30%.
