ISO 28762:2008

INTERNATIONAL ISO
STANDARD 28762
First edition
2008-10-15
Vitreous and porcelain enamels —
Enamel coatings applied to steel for
writing surfaces — Specification
Émaux vitrifiés — Revêtements en émail appliqués sur l'acier de
surfaces d'écriture — Spécification

Reference number
©
ISO 2008
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ii © ISO 2008 – All rights reserved

Contents Page
Foreword .iv
1 Scope .1
2 Normative references.1
3 Terms and definitions .2
4 Steel substrate requirements.2
5 Final thickness of fired enamel.2
6 Functional characteristics of coating.2
6.1 Adherence test.2
6.2 Wear resistance .2
6.3 Impact resistance .3
6.4 Surface hardness (Mohs).3
6.5 Scratch resistance.3
6.6 Flatness .3
6.7 Acid and chemical resistance .3
7 Aesthetic characteristics of coating.3
7.1 Colour .3
7.2 Gloss.3
7.3 Surface appearance .4
8 Writeability and eraseability.4
8.1 Chalkboards.4
8.2 Whiteboards.4
9 Resistance to graffiti .4

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 28762 was prepared by the European Committee for Standardization (CEN) (as EN 14864) and was
adopted, under a special “fast-track procedure”, by Technical Committee ISO/TC 107, Metallic and other
inorganic coatings, in parallel with its approval by the ISO member bodies.

iv © ISO 2008 – All rights reserved

INTERNATIONAL STANDARD ISO 28762:2008(E)

Vitreous and porcelain enamels — Enamel coatings applied to
steel for writing surfaces — Specification
1 Scope
This International Standard specifies the requirements for the functional and aesthetic characteristics of
vitreous and porcelain enamel coatings applied to plain steel for use as writing surfaces (whiteboards and
chalkboards).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 2178, Non-magnetic coatings on magnetic s
...