GB/T 38020.2-2019
Watch-cases and accessories—Gold alloy coverings—Part 2:Determination of fineness, thickness, corrosion resistance and adhension (English Version)
- Standard No.
- GB/T 38020.2-2019
- Language
- Chinese, Available in English version
- Release Date
- 2019
- Published By
- 国家市场监督管理总局、中国国家标准化管理委员会
- Latest
- GB/T 38020.2-2019
- Scope
- This part of GB/T 38020 specifies the test methods for the purity, thickness, corrosion resistance and adhesion of gold alloy coatings on watch cases and accessories, including straps that cannot be removed from the watch case. This part of the test is only applicable to the effective surface. This section applies to all gold alloy coatings specified in GB/T 38020.1.
GB/T 38020.2-2019 Referenced Document
- GB/T 10125 Corrosion tests in artificial atmospheres—Salt spray tests*， 2021-08-20 Update
- GB/T 16921 Metallic coatings.Measurement of coating thickness.X-ray spectrometric methods
- GB/T 18043 Jewellery.Determination of precious metal content.Method using X-Ray fluorescence spectrometry
- GB/T 18179 Metallic coatings-Porosity tests-Humid sulfur(flowers of sulfur) test
- GB/T 19351 Metallic coatings-Determination of porosity in gold coatings on metal substrates-Nitric acid vapour test
- GB/T 20018 Metallic and non-metallic coatings.Measurement of thickness.Beta backscatter methods
- GB/T 31563 Metallic coatings.Measurement of coating thickness.Scanning electron microscope method
- GB/T 38020.1 Watch-cases and accessories—Gold alloy coverings—Part 1:General requirements
- GB/T 38020.2 Watch-cases and accessories—Gold alloy coverings—Part 2:Determination of fineness, thickness, corrosion resistance and adhension
- GB/T 4955 Metallic coatings.Measurement of coating thickness.Coulometric method by anodic dissolution
- GB/T 9288 Gold jewellery alloys—Determination of gold—Cupellation method (fire assay)*， 2019-10-18 Update
- ISO 27874 Metallic and other inorganic coatings - Electrodeposited gold and gold alloy coatings for electrical, electronic and engineering purposes - Specification and test methods
- ISO 3160-1:1998 Watch-cases and accessories - Gold alloy coverings - Part 1: General requirements
- ISO 3868 Metallic and other non-organic coatings; Measurement of coating thicknesses; Fizeau multiple-beam interferometry method
- ISO 4538 Metallic coatings; Thioacetamide corrosion test (TAA test)
GB/T 38020.2-2019 history
- 2019 GB/T 38020.2-2019 Watch-cases and accessories—Gold alloy coverings—Part 2:Determination of fineness, thickness, corrosion resistance and adhension
