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API STD 521: Guide for Pressure-relieving and Depressuring Systems – Edition 6

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ISO 15184:2020

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

CDN $82.00

Description

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.

Edition

3

Published Date

2020-01-08

Status

PUBLISHED

Pages

6

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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.

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