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ASTM C 346 : 2026

Current

Current

The latest, up-to-date edition.

Standard Test Method for 45-deg Specular Gloss of Ceramic Materials

Available format(s)

PDF

Language(s)

English

Published date

01-03-2026

€48.04
Excluding VAT

Committee
C 14
DocumentType
Test Method
Pages
3
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

1.1ÂThis test method covers the determination of the specular gloss of porcelain enameled specimens, but may be applicable to other specimens having similar reflection characteristics. This test method may be used to compare the gloss of porcelain enameled specimens or to provide an index of acid or abrasion resistance by measurement of gloss loss.

Note 1:ÂSpecular gloss is one of several related appearance attributes that produce the sensation of glossiness. For this reason, specular gloss measurements may not always correlate well with visual rankings of glossiness.

Note 2:ÂImproved correlations with visual judgments can sometimes be achieved by the use of instruments with different geometries than those specified herein. Refer to Test Method D523 for 20-, 60-, and 85-deg geometries. Values generally cannot be predicated for one geometry from measurements made with another.

1.2ÂThis standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3ÂThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E 179 : 2017 : R2022 Standard Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials
ASTM D 2457 : 2021 Standard Test Method for Specular Gloss of Plastic Films and Solid Plastics
ASTM C 286 : 2022 Standard Terminology Relating to Porcelain Enamel and Ceramic-Metal Systems
ASTM C 1048 : 2025 Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass
ASTM C 448 : 1988 : R2021 Standard Test Methods for Abrasion Resistance of Porcelain Enamels

€48.04
Excluding VAT