GB/T 26017-2020 High purity copper

Scope: This standard specifies the requirements for high-purity copper products, test methods, inspection rules, marking, packaging, transportation, storage, quality certificates and purchase orders (or contracts). This standard is applicable to high-purity copper for sputtering border material and ion-plating processing products, various connecting wires in the electronics industry, bonding wires for electronic packaging, high-quality audio cables, high-purity reagents, standard samples and advanced alloys.

GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 26017-2020High purity copper