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Significance and Use
3.1 The fineness of the frit has a direct bearing on many of its properties, such as fusibility, tearing, gloss, opacity, suspension in the slip, and ease of spraying.
1.1 These test methods cover the determination of the fineness of frit in wet- or dry-milled porcelain enamels and other ceramic coatings for metals by means of the No. 200 (75-μm) or No. 325 (45-μm) sieve.
1.2 The two methods appear as follows:
Method A—Referee Method
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1.3 Method A is intended for use where a referee method of higher accuracy is required, while Method B is intended to meet the needs of normal enamel plant production control operations where a rapid, simplified method of sieve testing is required. The accuracy of the simplified method has proved to be entirely adequate for this use. The simplified test, however, is not recommended where high accuracy is required.
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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
ICS Number Code 25.220.50 (Enamels)
ASTM C285-10(2015)e1, Standard Test Methods for Sieve Analysis of Wet-Milled and Dry-Milled Porcelain Enamel, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top