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See Chinese contents: YS/T 492-2021 YS/T 492-2021: Element additive for aluminum and aluminum alloys
This document stipulates the product classification, quality assurance, requirements, test methods, inspection rules and markings, packaging, transportation, storage, quality certificate and order form (or contract) content of element additives for aluminum and aluminum alloy. This document applies to additives for formulating or adjusting the chemical composition of aluminum and aluminum alloys (hereinafter referred to as and quot;additives and quot;).
