GB/T 46055-2025 Corrosion of metals and alloys—Guidelines for corrosion testing of metals and alloys exposed in deep-sea water

Scope

This document specifies the methodological guidelines for conducting seawater exposure corrosion tests on metals and alloys in deep-sea environments, including the selection of test sites, components and devices of the test system, sample preparation, test procedures, post-test sample processing and evaluation, and test reports. This document is applicable to comprehensive corrosion exposure tests and localized corrosion tests of metals and alloys in deep-sea environments, such as stress corrosion cracking, galvanic corrosion, and crevice corrosion tests. Exposure tests of other materials, such as composites and rubber, in deep-sea environments can also refer to this document, but the evaluation methods for recovered samples differ from those for metals and alloys. This document is not applicable to the performance testing of sacrificial anodes in actual deep-sea environments, for which special test units and equipment can be used to conduct deep-sea exposure tests. However, this document can still provide useful references for conducting deep-sea performance tests of sacrificial anodes.

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