GB/T 20854-2007 (English Version) PDF

Standard No.: GB/T 20854-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 20854-2007

Scope: This standard specifies the apparatus and test methods for accelerated corrosion tests used to evaluate the corrosion resistance of metallic materials used in outdoor salt-contaminated environments, regardless of whether the tested materials have permanent or temporary corrosion protection. This standard specifies the conditions under which specimens are cyclically exposed to neutral salt spray, "dry" and "wet" test environments. This standard does not specify the type and exposure time of the sample. Compared with traditional accelerated corrosion tests, such as neutral salt spray test (NSS), the biggest advantage of this test is that it can better reproduce the corrosion that occurs in outdoor salt-polluted environments. The accelerated corrosion test in this standard applies to: - metals and their alloys; - metallic coatings (anodic and cathodic); - conversion coatings; - anodic oxide coatings; - metallic materials organic overlay.

GB/T 20854-2007 Referenced Document

GB/T 16545 Corrosion of metals and alloys.Removal of corrosion products from corrosion test specimens*， 2015-09-11 Update

2007 GB/T 20854-2007 Corrosion of metals and alloys Accelerated testing involving cyclic exposure to salt mist, "dry" and "wet" condition