ISO 21746:2019

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 document specifies the apparatus, the reagents and the procedure to be used in conducting the neutral salt spray (NSS), acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray (CASS) tests for assessment of the galvanic corrosion resistance of joints and bonded structures between carbon fibre reinforced plastics (CFRPs) and metallic materials, with or without permanent or temporary insulation for the galvanic current.

Assemblages composites et métal — Essais de corrosion galvanique des structures en plastiques renforcés de fibres de carbone (CFRP) jointes ou fixées en atmosphères artificielles — Essais au brouillard salin

General Information

• Status: Published
• Publication Date: 25-Apr-2019
• ICS: 83.120 - Reinforced plastics
• Technical Committee: ISO/TC 61/SC 13 - Composites and reinforcement fibres
• Drafting Committee: ISO/TC 61/SC 13/WG 7 - Composites and metal assemblies
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Apr-2024
• Completion Date: 15-Apr-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21746
First edition
2019-04
Composites and metal assemblies —
Galvanic corrosion tests of carbon
fibre reinforced plastics (CFRPs)
related bonded or fastened
structures in artificial atmospheres
— Salt spray tests
Assemblages composites et métal — Essais de corrosion galvanique des
structures en plastiques renforcés de fibres de carbone (CFRP) jointes
ou fixées en atmosphères artificielles — Essais au brouillard salin
Reference number
ISO 21746:2019(E)
©
ISO 2019

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ISO 21746:2019(E)

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© ISO 2019
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ii © ISO 2019 – All rights reserved

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ISO 21746:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test solutions . 2
4.1 Preparation of the sodium chloride solution . 2
4.2 pH adjustment . 3
4.2.1 pH 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 Filtration . 3
5 Apparatus . 4
6 Method for evaluating cabinet corrosivity . 5
6.1 General . 5
6.2 Reference specimens . 5
6.3 Arrangement of the reference specimens. 6
6.4 Duration of tests .
...