JB/T 12857-2016Process specification for hexavalent chromium-free decorative electroplating (English PDF)
无六价铬电镀装饰镀层工艺规范
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
April 5, 2016
Implementation date
September 1, 2016
Scope
JB/T 12857-2016 is the English-translated version of 无六价铬电镀装饰镀层工艺规范.
JB/T 12857-2016 is a recommended Chinese machinery industry standard setting out a process specification for decorative electroplating free of hexavalent chromium.
It covers the process requirements, the quality control and the quality requirements for protective and decorative plating with trivalent chromium, tin-cobalt-zinc alloy and tin-cobalt alloy.
Its field is protective and decorative copper plus nickel plus chromium and nickel plus chromium composite coatings in which those three deposits take the place of hexavalent chromium plating.
Among the standards it quotes are GB/T 3138, GB/T 4955, GB/T 5270, GB/T 6461, GB/T 6465, GB/T 9797, GB/T 10125, GB/T 12609 and GB/T 26108. The Chinese classification is A29 and the ICS code 25.220.40.
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Document preview — JB/T 12857-2016
National Standard of the People's Republic of China
- ICS
- 25.220.40
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
1 Foreword
JB/T 12857-2016 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 5 April 2016 and has been in force since 1 September 2016.
2 Scope
This standard is a recommended Chinese machinery industry standard setting out a process specification for decorative electroplating free of hexavalent chromium. It covers the process requirements, the quality control and the quality requirements for protective and decorative plating with trivalent chromium, tin-cobalt-zinc alloy and tin-cobalt alloy. Its field is protective and decorative copper plus nickel plus chromium and nickel plus chromium composite coatings in which those three deposits take the place of hexavalent chromium plating. Among the standards it quotes are GB/T 3138, GB/T 4955, GB/T 5270, GB/T 6461, GB/T 6465, GB/T 9797, GB/T 10125, GB/T 12609 and GB/T 26108. The Chinese classification is A29 and the ICS code 25.220.40.
3 Normative references
JB/T 12857-2016 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB/T 3138
GB/T 4955
GB/T 5270
GB/T 6461
GB/T 6465
GB/T 9797
GB/T 10125
GB/T 12334
GB/T 12609
GB/T 26108
4 About this standard
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
English translation: about 15 pages
5 Classification and status
International classification (ICS): 25.220.40
Prefix JB/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 3138Metallic and other inorganic coatings -- Surface treatment, metallic and other inorganic coatings -- Vocabulary
- GB/T 4955Metallic coatings -- Measurement of coating thickness -- Coulometric method by anodic dissolution
- GB/T 5270Metallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesion
- GB/T 6461Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates -- Rating of test specimens and manufactured articles subjected to corrosion tests
- GB/T 6465Metallic and other non-organic coatings -- Corrodkote corrosion test (CORR test)
- GB/T 9797Metallic and other inorganic coatings - Electrodeposited coatings of nickel, nickel plus chromium, copper plus nickel and of copper plus nickel plus chromium
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