British Standards Institution

Source:: BSI
Committee:: ACE/65 - Non-metallic materials for aerospace purposes
Categories:: Information management | Standardization. General rules

Scope

This British Standard specifies the requirements for the materials and performance of a Chromium(V)-free primer for aerospace purposes. The primer, specified for use on metallic substrates as an anti-corrosive coating system when overcoated with a compatible finish provides protection and as functional finishing scheme for exterior surfaces

Purpose

BS X 42, which is the chromate-free ‘pre-primer’ (also known as an etch primer) whereas BS X 43 is the proposed chromate-free epoxy primer which may be applied on top of BS X 42 or directly on to a metal surface.

Comment on proposal

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Are you aware of any regulation, existing standards and other good practice information in this area in the UK (e.g. Industry codes of practice; company specifications, international or European Standards)? *

Would the development of a standard(s) in this area have a particular impact/relevance to SME, consumer, environmental or societal interests? *

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Please email further comments to: admin.start@bsigroup.com

Standard timeline

1. Proposal

Proposal start date:

18/06/2025

Proposal end date:

17/08/2025

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

BS X 43 Specification for a Chromium (VI)-free Primer for aerospace purposes

Scope

Purpose

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