GB/T 12335-1990
Metallic coatings--Coatings anodic to the substrate--Rating of test specimens subjected to corrosion tests

Be replaced

Standard No.

GB/T 12335-1990

Language

Chinese

Release Date

1990

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 6461-2002

Lastest

GB/T 6461-2002

Scope

This standard specifies the evaluation method for the corrosion state of the anodic coating sample after the corrosion test. This standard applies to the rating of the above-mentioned samples after the outdoor atmospheric exposure test, and also to the rating of similar samples after the accelerated corrosion test. This standard does not consider some details of the actual product evaluation. This standard applies to protective coatings that are anodic to the base metal, such as zinc coatings with or without passivation on steel or tin coatings with or without passivation on copper. Not suitable for coatings which are cathodic to the base metal, such as electroplated nickel decachrome or copper decanickel decachrome plating on steel and zinc die castings.

GB/T 12335-1990 history

• 2002 GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates--Rating of test specimens and manufactured articles subjected to corrosion tests
• 1990 GB/T 12335-1990 Metallic coatings--Coatings anodic to the substrate--Rating of test specimens subjected to corrosion tests

GB/T 12335-1990 was changed to GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates--Rating of test specimens and manufactured articles subjected to corrosion tests.