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ISO 15184:2020

Paints and varnishes — Determination of film hardness by pencil test ISO 15184:2020

Publication date:   Jan 8, 2020

General information

90.20 Standard under periodical review   Jan 15, 2025

ISO

ISO/TC 35/SC 9 General test methods for paints and varnishes

International Standard

87.040   Paints and varnishes

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Scope

This document specifies a method for determining the film hardness by pushing pencils of known hardness over the film.
The test can be performed on a single coating of a paint, varnish or related product, or on the upper layer of a multi-coat system.
This rapid test has not been found to be useful in comparing the pencil hardness of different coatings. It is more useful in providing relative ratings for a series of coated panels exhibiting significant differences in pencil hardness.
The method is applicable only to smooth surfaces.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 15184:2012

NOW

PUBLISHED
ISO 15184:2020
90.20 Standard under periodical review
Jan 15, 2025