ISO 13805-1999 PDF

Full title and description

Vitreous and porcelain enamels for aluminium — Determination of the adhesion of enamels on aluminium under the action of electrolytic solution (spall test). This International Standard specifies an accelerated laboratory test (the spall test) to assess the tendency of porcelain/vitreous enamel coatings on aluminium and aluminium alloys to lose adhesion (spalling) when exposed to moisture or weathering, by using an electrolytic solution to promote coating detachment.

Abstract

ISO 13805:1999 defines a reproducible spall (electrolytic) test method intended to provide a rapid indication of the resistance of enamel coatings on aluminium to spalling caused by poor adhesion and environmental exposure. The extent of spalling observed under the test correlates with the likelihood of coating failure in service; the method is intended for comparative evaluation and quality control of vitreous/porcelain enamels on aluminium substrates.

General information

• Status: Published (International Standard; confirmed at subsequent ISO reviews).
• Publication date: 25 November 1999 (ISO edition 1:1999; formal listing 1999-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.50 (Enamels).
• Edition / version: Edition 1 (1999).
• Number of pages: 4.

Scope

The standard applies to vitreous and porcelain enamel coatings applied to aluminium and aluminium alloys and specifies the apparatus, sample preparation, test procedure and assessment criteria for the electrolytic spall test. It is intended for laboratory evaluation to detect poor adhesion and to compare coatings or production batches with respect to their susceptibility to spalling under accelerated exposure conditions.

Key topics and requirements

• Definition and purpose of the electrolytic spall (adherence) test for enamelled aluminium.
• Requirements for sample preparation and surface condition prior to testing.
• Specification of the electrolytic cell, electrolyte composition, applied current/voltage and test duration.
• Evaluation criteria: assessment of extent and pattern of spalling, ranking or pass/fail guidelines for comparative testing.
• Test report contents and interpretation guidance for quality control and materials comparison.

Typical use and users

Used by coating and metal-treatment laboratories, enamel manufacturers, quality-control and R&D teams, specifiers and certification bodies to assess adhesion performance of porcelain/vitreous enamel coatings on aluminium components. Typical applications include evaluation of enamel coatings for cookware, architectural components, appliances and other enameled aluminium articles where adhesion under humid or weathering conditions is critical.

Related standards

ISO 13805:1999 is part of the family of standards addressing enamels and coated articles. Related documents commonly referenced for enamel characterization and coating testing include standards on coating thickness measurement, scratch hardness, and migration/release from enamelled articles (examples of related ISO and EN/ISO documents are indicated in national catalogues and standards bodies' listings).

Keywords

enamel, porcelain enamel, vitreous enamel, aluminium, adhesion, spall test, electrolytic test, coating adhesion, accelerated testing, quality control

FAQ

Q: What is this standard?

A: ISO 13805:1999 is an International Standard that specifies an accelerated electrolytic spall test to determine the adhesion (resistance to spalling) of vitreous and porcelain enamel coatings on aluminium and aluminium alloys.

Q: What does it cover?

A: It covers the scope, apparatus, sample preparation, test procedure, evaluation and reporting for the electrolytic spall (adhesion) test used to assess enamel coatings on aluminium for susceptibility to spalling caused by moisture or weathering.

Q: Who typically uses it?

A: Enamel manufacturers, coating laboratories, material investigators, product specifiers and quality assurance teams use the standard for comparative testing, batch control and R&D on enamelled aluminium products.

Q: Is it current or superseded?

A: The published edition is ISO 13805:1999 (Edition 1, 1999). The record shows the standard was published in 1999 and has been subject to ISO periodic reviews; users should check with their national standards body or ISO to confirm if a more recent revision or replacement exists in their jurisdiction before relying on it for regulatory or contractual requirements.

Q: Is it part of a series?

A: It is one of several ISO (and adopted EN/ISO) documents dealing with enamels and enamelled articles; related standards address properties such as coating thickness, hardness and release from enamelled surfaces. National and regional bodies may publish EN versions or adoptions (for example EN ISO editions) incorporating ISO 13805:1999 text.

Q: What are the key keywords?

A: enamel, porcelain enamel, vitreous enamel, aluminium, adhesion, spalling, electrolytic test, coating testing, accelerated weathering.