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Position: Chinese Standard in English/GB/T 5270-2005
GB/T 5270-2005   Metallic coatings on metallic substrates?Electrodeposited and chemically deposited coatings?Revies of methods available for testing adhesion (English Version)
Standard No.: GB/T 5270-2005 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 4000 words Price(USD):80.0 remind me the price change

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Implemented on:2005-12-1 Delivery: via email in 1 business day
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Standard No.: GB/T 5270-2005
English Name: Metallic coatings on metallic substrates?Electrodeposited and chemically deposited coatings?Revies of methods available for testing adhesion
Chinese Name: 金属基体上的金属覆盖层电沉积和化学沉积层附着强度试验方法评述
Chinese Classification: A29    Material Protection
Professional Classification: GB    National Standard
ICS Classification: 25.220.20 25.220.20    Surface treatment 25.220.20
Issued by: AQSIQ
Issued on: 2005-6-23
Implemented on: 2005-12-1
Status: superseded
Superseded by:GB/T 5270-2024 Metallic coatings on metallic substrates—Electrodeposited and chemically deposited coatings—Review of methods available for testing adhesion
Superseded on:2025-1-1
Superseding:GB/T 5270-1985 Metallic coatings on metallic substrates; Electrodeposited and chemically deposited coatings; Review of methods available for testing adhesion
Language: English
File Format: PDF
Word Count: 4000 words
Price(USD): 80.0
Delivery: via email in 1 business day
1 Scope This standard describes methods of checking the adhesion of electrodeposited and chemically deposited coatings. It is limited to tests of a qualitative nature. Table 2 indicates the suitability of each test for some of the most usual types of metallic coatings. Most of the tests described are capable of destroying both the coating and the article being tested, but some destroy the coating only. Even if the adhesion of the coating is found to be satisfactory on articles not destroyed in testing, it shall not be assumed that the articles are undamaged. For example, the burnishing test (see 2.1) may render an article unacceptable and the thermal shock test (see 2.12) may produce unacceptable metallurgical changes. This standard does not describe certain tests which have been developed at various times to give a quantitative measure of adhesion of metallic coating to a substrate since such tests require special apparatus and considerable skill in their performance which renders them unsuitable as quality control tests for production parts. Some of these quantitative tests may, however, be useful in research and development work. When particular methods of adhesion testing are included in International Standards for individual coatings, they should be used in preference to the methods described in this International Standard and should be agreed upon beforehand by the supplier and the purchaser. 2 Test methods 2.1 Burnishing test If plated parts are subjected to burnishing in a localized area, the deposit will tend to work-harden and absorb frictional heat. If the coating is thin, separation of the coating from the basis metal as blisters will occur under these conditions in areas of poor adhesion. When the shape and size of the part permit, an area of not more than 6cm2 of the plated surface may be rubbed with a smooth implement for about 15s. A suitable implement is a steel rod 6mm in diameter with a smooth hemispherical end. The pressure shall be sufficient to burnish the coating at every stroke but not so great as to cut the coating. Poor adhesion is indicated by the appearance of a blister which grows as the rubbing is continued. If the mechanical properties of the coating are poor, the blister may crack and the coating will peel from the basis metal. This test shall be limited to relatively thin deposits. 2.2 Ball burnishing test
Foreword i 1 Scope 2 Test methods 2.1 Burnishing test 2.2 Ball burnishing test 2.3 Shot peening test 2.4 Peel Test 2.5 File test 2.6 Grinding and sawing tests 2.7 Chisel test 2.8 Scribe and grid test 2.9 Bending test 2.10 Twisting (winding) test 2.11 Tensile test 2.12 Thermal shock test 2.13 Drawing test 2.14 Cathodic test Annex A (Informative) Determination of adhesion of silver deposits (100 to 600μm) - Shot-peening method
GB/T 5270-2005 is referred in:
* GB 18145-2014 Ceramic Cartridge Faucets
* GB/T 24293-2009 Digital thermostatic faucet
* QB/T 2997-2008 Adornment with precious metal coating
* GB/T 18680-2002 The transparent conductive glass with indium-tin oxide films used in liquid crystal display
* QC/T 625-2013 Metallic coatings and conversion coatings for automobiles
*JB/T 10216-2013 Cable Support System for Electric Control Distribution
*NB/T 20001-2013 Fabrication Rules for Mechanical Components of PWR Nuclear Island
*GB/T 12599-2002 Metallic coatings--Electroplated coatings of tin--Specification and test methods
*TB/T 3224-2010 Automatic Brake Valve for Derailment of Railway Freight Car
*YB/T 4119-2004 Specifications for mould plates of CC
*QB/T 5003-2016 Touch-sensitive faucet
*GB/T 27710-2011 Floor drain
*QB/T 4000-2010 Sensor automatic thermostatic faucets
*GB/T 32022-2015 Adornment with precious metal coating
*GB/T 13913-2008 Metallic coatings - Autocatalytic (Electroless) nickel-phosphorus alloy coatings - Specification and test methods
*QB/T 5418-2019 Thermostatic Shower System
*GB/T 41735-2022 Green manufacturing—Technical specification for laser surface cleaning
*GB/T 26025-2010 Specifications for copper mould plates of continuous casting
*GB/T 27710-2020 Floor drain
*GB/T 27710-2020/XG1-2021 Floor drain,includes Amendment 1
*QB/T 2806-2017 Thermotatie faucets
*QB/T 1560-2017 Accessories of bathroom
Code of China
Standard
GB/T 5270-2005  Metallic coatings on metallic substrates?Electrodeposited and chemically deposited coatings?Revies of methods available for testing adhesion (English Version)
Standard No.GB/T 5270-2005
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count4000 words
Price(USD)80.0
Implemented on2005-12-1
Deliveryvia email in 1 business day
Detail of GB/T 5270-2005
Standard No.
GB/T 5270-2005
English Name
Metallic coatings on metallic substrates?Electrodeposited and chemically deposited coatings?Revies of methods available for testing adhesion
Chinese Name
金属基体上的金属覆盖层电沉积和化学沉积层附着强度试验方法评述
Chinese Classification
A29
Professional Classification
GB
ICS Classification
Issued by
AQSIQ
Issued on
2005-6-23
Implemented on
2005-12-1
Status
superseded
Superseded by
GB/T 5270-2024 Metallic coatings on metallic substrates—Electrodeposited and chemically deposited coatings—Review of methods available for testing adhesion
Superseded on
2025-1-1
Abolished on
Superseding
GB/T 5270-1985 Metallic coatings on metallic substrates; Electrodeposited and chemically deposited coatings; Review of methods available for testing adhesion
Language
English
File Format
PDF
Word Count
4000 words
Price(USD)
80.0
Keywords
GB/T 5270-2005, GB 5270-2005, GBT 5270-2005, GB/T5270-2005, GB/T 5270, GB/T5270, GB5270-2005, GB 5270, GB5270, GBT5270-2005, GBT 5270, GBT5270
Introduction of GB/T 5270-2005
1 Scope This standard describes methods of checking the adhesion of electrodeposited and chemically deposited coatings. It is limited to tests of a qualitative nature. Table 2 indicates the suitability of each test for some of the most usual types of metallic coatings. Most of the tests described are capable of destroying both the coating and the article being tested, but some destroy the coating only. Even if the adhesion of the coating is found to be satisfactory on articles not destroyed in testing, it shall not be assumed that the articles are undamaged. For example, the burnishing test (see 2.1) may render an article unacceptable and the thermal shock test (see 2.12) may produce unacceptable metallurgical changes. This standard does not describe certain tests which have been developed at various times to give a quantitative measure of adhesion of metallic coating to a substrate since such tests require special apparatus and considerable skill in their performance which renders them unsuitable as quality control tests for production parts. Some of these quantitative tests may, however, be useful in research and development work. When particular methods of adhesion testing are included in International Standards for individual coatings, they should be used in preference to the methods described in this International Standard and should be agreed upon beforehand by the supplier and the purchaser. 2 Test methods 2.1 Burnishing test If plated parts are subjected to burnishing in a localized area, the deposit will tend to work-harden and absorb frictional heat. If the coating is thin, separation of the coating from the basis metal as blisters will occur under these conditions in areas of poor adhesion. When the shape and size of the part permit, an area of not more than 6cm2 of the plated surface may be rubbed with a smooth implement for about 15s. A suitable implement is a steel rod 6mm in diameter with a smooth hemispherical end. The pressure shall be sufficient to burnish the coating at every stroke but not so great as to cut the coating. Poor adhesion is indicated by the appearance of a blister which grows as the rubbing is continued. If the mechanical properties of the coating are poor, the blister may crack and the coating will peel from the basis metal. This test shall be limited to relatively thin deposits. 2.2 Ball burnishing test
Contents of GB/T 5270-2005
Foreword i 1 Scope 2 Test methods 2.1 Burnishing test 2.2 Ball burnishing test 2.3 Shot peening test 2.4 Peel Test 2.5 File test 2.6 Grinding and sawing tests 2.7 Chisel test 2.8 Scribe and grid test 2.9 Bending test 2.10 Twisting (winding) test 2.11 Tensile test 2.12 Thermal shock test 2.13 Drawing test 2.14 Cathodic test Annex A (Informative) Determination of adhesion of silver deposits (100 to 600μm) - Shot-peening method
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