GB/Z 135-2025 Corrosion of metals and alloys—Corrosion tests in artificial atmospheres—Guidelines for selection of accelerated corrosion test for product qualification

Scope

This document is applicable to the selection of suitable atmospheric accelerated corrosion test methods for the identification of metal material products, regardless of whether they have permanent or temporary corrosion protection measures. As a guide for preparing test specifications, this document also provides the characteristics of many standard accelerated corrosion tests.
This document includes the following aspects:
—— Categories of atmospheric accelerated corrosion tests;
—— Recommended application fields for different types of tests and their applicability;
—— Test corrosivity and relative corrosion rates of standard metals;
—— Requirements for test equipment, principles of repeatability and relevance of service performance;
—— Recommended procedures for product identification.
The main purpose of this document is to propose a criterion for comparing different accelerated corrosion test methods currently used as international standards. The applicability of the test methods will vary according to the expected application requirements of the products.

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