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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

40.99     May 28, 2026

ISO

ISO/TC 35/SC 9

International Standard

87.040  

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

IN_DEVELOPMENT
ISO/DIS 21227-4
40.99 Full report circulated: DIS approved for registration as FDIS
May 28, 2026