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ISO/DIS 21227-4

Paints and varnishes — Evaluation of defects on coated surfaces using digital image processing — Part 4: Evaluation of filiform corrosion on coated corrosion test samples

General information

40.20     Mar 2, 2026

ISO

ISO/TC 35/SC 9

International Standard

87.040  

Buying

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Scope

ISO 21227-4:2008 describes a method for evaluating filiform corrosion by means of digital optical imaging. Only the evalution procedure is described. The filiform corrosion itself is produced in accordance with other standards.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 21227-4:2008

NOW

PROJECT
ISO/DIS 21227-4
40.20 DIS ballot initiated: 12 weeks
Mar 2, 2026

National adoptions

naSRPS EN ISO 21227-4:2022  
ISS

Paints and varnishes - Evaluation of defects on coated surfaces using digital image processing - Part 4: Evaluation of filiform corrosion on coated corrosion test samples (ISO/DIS 21227-4:2026)

40.20   DIS ballot initiated: 12 weeks

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