T/CAEE 050-2026 Active Group standards

T/CAEE 050-2026 Electronic-grade precision copper strip

Publish Date: 2026-04-15 Implement Date: 2026-04-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CAEE 050-2026

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Ophthalmic and ENT surgical instruments

ICS Name: Copper products

Publish Date: 2026-04-15

Implement Date: 2026-04-30

Scope

This document specifies the terms and definitions, classification and marking, technical requirements, test methods, inspection rules, packaging, marking, transportation and storage, and order form requirements for electronic-grade precision copper strips. This document is applicable to electronic-grade precision copper strips used in the manufacture of electronic components, such as micro-motors, relays, protectors, electrical connectors, precision switches, sensors, connectors, etc. 5.4.3 Coating Quality (Applicable to Coated Copper Strips) Coating Uniformity The coating thickness tolerance is ±0.005mm. Ten measurement points are uniformly selected in the width and length direction of the copper strip, and the coating thickness deviation shall be ≤0.003mm. Coating Adhesion According to the provisions of GB/T 232, the 180° bending test (bending radius is twice the thickness of the copper strip) is carried out. There shall be no peeling or flaking of the coating; according to the tape adhesion method (using 3M 610 tape, with an adhesion pressure of 0.5MPa and a rapid peeling time of 1 minute after adhesion), there shall be no coating detachment. Coating Corrosion Resistance Tin coated copper strips and nickel coated copper strips shall be tested according to the neutral salt spray test (NSS) method in GB/T 10125 for 48 hours. After the test, there shall be no obvious rust or discoloration on the surface; for silver coated copper strips, palladium coated copper strips, and gold coated copper strips, the test time shall be 72 hours. After the test, there shall be no obvious rust, discoloration, or coating detachment on the surface. Corrosion Resistance The copper strip shall have certain corrosion resistance. According to the neutral salt spray test (NSS) method in GB/T 10125, after 48 hours of testing, the mass loss shall be ≤5mg/dm2, and there shall be no obvious rust or pitting on the surface. Residual Stress Residual stress indicators: the coiling diameter ≥