GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests

Scope

This document specifies the equipment, reagents, and methods used in neutral salt spray (NSS), acetic acid salt spray (AASS), and copper accelerated acetic acid salt spray (CASS) tests. It also stipulates the methods for evaluating the environmental corrosivity of test chambers. This document is applicable to assessing the corrosion resistance of metal materials and coatings, with the tested objects being those with permanent or temporary corrosion protection properties, or those without such properties. The document does not specify the size and type of test samples, the test cycle and result interpretation for special products, which should be referred to in the corresponding product specifications. This document is suitable for detecting discontinuities such as pores and other defects in metals and their alloys, metal coatings (anodic or cathodic), conversion coatings, anodic oxide films, and organic coatings on metal substrates. The acetic acid salt spray test is applicable to copper + nickel + chromium or nickel + chromium decorative plating, as well as aluminum anodic oxide films and organic coatings. The copper accelerated acetic acid salt spray test is applicable to copper + nickel + chromium or nickel + chromium decorative plating, as well as aluminum anodic oxide films and organic coatings. These methods are suitable for quality inspection of metal materials with or without corrosion protection, but are not applicable to ranking the corrosion resistance of different materials or long-term corrosion resistance testing of pre-tested materials.

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