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ASTM C485-24
Standard Test Method for Measuring Warpage of Ceramic Tile
1.1 This test method covers procedures for measuring the corner, diagonal, and edge warpages of ceramic tile.
1.1.1 Tile Requirements for Corner, Diagonal, and Edge Warpage Measurement
Tile should be nominally flat, uniform in overall thickness, smooth faced, and rectangular in shape, including square.
1.1.2 Tile Requirements for Corner Warpage Measurement
All facial edge dimensions equal to or greater than 2.36 in. (60 mm) in length.
1.1.3 Tile Requirements for Edge and Diagonal Warpage Measurement
All facial edge dimensions equal to or greater than 2 in. (51 mm) in length.
1.1.4 Trim Tile meeting the descriptions in 1.1.1 – 1.1.3 except that only a part of the tile surface is flat. (Surface trim tile should be treated as flat tile whenever possible.)
1.2 This test method is not applicable to tile having embossed surfaces that are not flat, or that have a combination of variable body thickness and an irregular face.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This 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.
1.5 This 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.
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ASTM International [astm]
