GB/T 40340-2021 English PDF

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GB/T 40340-2021: Composites and metal assemblies - Galvanic corrosion tests of carbon fibre reinforced plastics (CFRPs) related bonded or fastened structures in artificial atmospheres - Salt spray tests
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40340-2021	404	Add to Cart	5 days	Composites and metal assemblies - Galvanic corrosion tests of carbon fibre reinforced plastics (CFRPs) related bonded or fastened structures in artificial atmospheres - Salt spray tests	Valid

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Basic data

Standard ID: GB/T 40340-2021 (GB/T40340-2021)
Description (Translated English): Composites and metal assemblies - Galvanic corrosion tests of carbon fibre reinforced plastics (CFRPs) related bonded or fastened structures in artificial atmospheres - Salt spray tests
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q23
Word Count Estimation: 22,259
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40340-2021: Composites and metal assemblies - Galvanic corrosion tests of carbon fibre reinforced plastics (CFRPs) related bonded or fastened structures in artificial atmospheres - Salt spray tests

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Composites and metal assemblies - Galvanic corrosion tests of carbon fibre reinforced plastics (CFRPs) related bonded or fastened structures in artificial atmospheres - Salt spray tests ICS 59.100.20 CCSQ23 National Standards of People's Republic of China Composite material and metal assembly carbon fiber reinforced polymer Compound-based composite material bonding or fastener connection structure Galvanic corrosion test in artificial environment salt spray test (ISO 21746.2019, IDT) Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Test solution 2 4.1 Preparation of salt solution 2 4.2 pH adjustment 3 4.2.1 The pH value of the salt solution 3 4.2.2 Neutral Salt Spray Test (NSS) 3 4.2.3 Acetic acid salt spray test (AASS) 3 4.2.4 Copper accelerated acetic acid salt spray test (CASS) 3 4.3 Filter 3 5 Device 3 5.1 Component protection 3 5.2 Salt spray box 3 5.3 Temperature control heater 4 5.4 Spray device 4 5.5 Collector 4 6 Evaluation method of corrosion performance of salt spray tank 5 6.1 General 5 6.2 Reference sample 5 6.3 Placement of reference sample 5 6.4 Test time 5 6.5 Mass loss (mass per unit area) 5 6.6 The ideal performance of the salt spray chamber 6 7 Test sample 6 8 Placement of test samples 6 9 Test conditions 6 10 Test time 7 11 Post-processing of test samples 7 11.1 General 7 11.2 Non-organic coating samples. metal and/or inorganic coating samples 7 11.3 Organic coating sample 8 11.3.1 Organic coating scratch sample 8 11.3.2 Organic coating non-scratch sample 8 12 Evaluation of results 8 13 Test report 8 Appendix A (informative) A schematic diagram of the design of a salt spray tank with mist discharge and drainage device 10 Appendix B (Informative) Supplementary Method for Evaluating Corrosion Performance of Salt Spray Chamber Using Zinc Reference Sample 11 Appendix C (Normative) Preparation of Organic Coating Test Board 12 Appendix D (Normative) Information to be added to organic coating test panels 13 Appendix E (informative) Recommended CFRP and metal assembly samples for salt spray test 14 Reference 15

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document adopts the translation method equivalent to ISO 21746.2019 ``Carbon fiber reinforced polymer matrix composites of composite materials and metal assemblies Galvanic corrosion test of material bonding or fastener connection structure under artificial environment salt spray test". The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 9271-2008 paint and varnish standard test board (ISO 1514.2004, MOD); ---GB/T 10123-2001 Basic terms and definitions of corrosion of metals and alloys (eqv, ISO 8044.1999); ---GB/T 13452.2-2008 Determination of paint film thickness of paints and varnishes (ISO 2808.2007, IDT); ---GB/T 16545-2015 Corrosion of metals and alloys. Removal of corrosion products on corrosion samples (1SO8407.2009, IDT); ---GB/T 30786-2014 Paint and varnish corrosion test of metal plate coating scratch marking guidelines (ISO 17872.2007, IDT). This document was proposed and managed by the National Carbon Fiber Standardization Technical Committee (SAC/TC572). Drafting organizations of this document. Nanjing Fiberglass Research and Design Institute Co., Ltd., China Automotive Technology Research Center Co., Ltd., Anhui Jiali Qi Advanced Composites Technology Co., Ltd., Shanghai Aircraft Manufacturing Co., Ltd., Sinopec Shanghai Petrochemical Co., Ltd., Anhui Hong Changxin Materials Co., Ltd., Changzhou Dams Testing Technology Co., Ltd., Jiangsu Jicui Carbon Fiber and Composite Materials Application Technology Research Institute Co., Ltd. Company, Changzhou Qifu Antai Composite Material Technology Co., Ltd. The main drafters of this document. Zhao Hongbao, Meng Xianming, Tang Yu, Ma Dan, Lu Qiang, Wang Guanhui, Zhang Lu, Han Feng, Zhang Sai, Zhou Yan, Hong Liang, Tan Yuan, Hou Wei, Xu Jingwei, Wang Jian, Ma Chaoqun. Composite material and metal assembly carbon fiber reinforced polymer Compound-based composite material bonding or fastener connection structure Galvanic corrosion test in artificial environment salt spray test

1 Scope

This document specifies the equipment and test equipment used for neutral salt spray (NSS), acetic acid salt spray (AASS) and copper accelerated acetic acid salt spray (CASS) tests. Agents and methods used to evaluate carbon fiber-reinforced polymer matrix composites (CFRPs) in the presence of temporary or temporary insulation currents Galvanic corrosion resistance at joints and glued structures between metal materials.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. ISO 1514 Paints and varnishes-Standard panels for testing ISO 2808 Paints and varnishes-Determination of filmthick- ness) ISO 3574 Commercial grade and stamping grade cold-rolled carbon steel sheet (Cold-reduced carbonsteel sheet of commercial and drawingqualities) ISO 6361-2 Wrought aluminum and aluminum alloy sheet, strip and plate Part 2.Mechanical properties (Wroughtaluminiumand aluminiumaloys-Sheets, stripsandplates-Part 2.Mechanicalproperties) ISO 8044 Corrosion of metals and alloys basic terms and definitions (Corrosionofmetalsandaloys-Basicterms anddefinitions) ISO 8407 Corrosion of metals and alloys. Removal of corrosion products on corrosion samples (Corrosionofmetalsandaloys-Re- movalofcorrosionproductsfromcorrosiontestspecimens) ISO 17872 Paints and varnishes corrosion test of metal plate coating scratch marking guidelines (Paints and varnishes- Guidelinesfortheintroductionofscribemarksthroughcoatingsonmetalicpanelsforcorrosiontes- ting)

3 Terms and definitions

The following terms and definitions defined in ISO 8044 apply to this document. 3.1 Reference material Materials with known test performance. 3.2 Reference specimen A certain amount of reference material used to check the reproducibility and repeatability of the salt spray chamber test results. ......

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