1、Designation: D607 82 (Reapproved 2012)Standard Specification forWet Ground Mica Pigments1This standard is issued under the fixed designation D607; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers two types of finely dividedmuscovit
3、e mica, commercially known as wet ground mica,suitable for use in the manufacture of protective coatings.2. Referenced Documents2.1 ASTM Standards:2D185 Test Methods for Coarse Particles in PigmentsD280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in Pig
4、mentsD716 Test Methods for Evaluating Mica PigmentD1208 Test Methods for Common Properties of CertainPigments3. Composition and Properties3.1 The pigments shall be made by wet grinding muscovitemica and shall conform to the requirements for propertiesprescribed as follows:TypesARegular 325 MGradeBFi
5、ne GradeApparent density, max, lb/ft3(g/cm3)12.0 (0.2) 12.0 (0.2)Moisture and other volatilematter, max, weight %0.5 0.5Grit, max, weight % 0.5 0.5Coarse particles, max, weight %:TypesARegular 325 MGradeBFine GradeTotal residue retained on aNo. 140 (106-m) sieve0.1 0.01Total residue retained on aNo.
6、 325 (45-m) sieve12.0 3.0Ignition loss, max, weight %(dry basis)5.0 5.03.2 The color shall be within mutually agreed upon limits ofa standard acceptable to both the purchaser and the seller.4. Sampling4.1 Two samples shall be taken at random from differentpackages from each lot, batch, days pack, or
7、 other unit ofproduction in a shipment. When no markings distinguishingbetween units of production appear, samples shall be takenfrom different packages in the ratio of two samples for each 5tons (inch-pound or SI), except that for shipments of less than10 000 lb two samples shall be taken. At the o
8、ption of thepurchaser the samples may be tested separately or afterblending in equal quantities the samples from the sameproduction unit to form a composite sample.5. Test Methods5.1 Tests shall be conducted in accordance with the appro-priate ASTM methods. Test procedures not covered by ASTMmethods
9、 shall be mutually agreed upon between the purchaserand the seller.5.1.1 Apparent DensityTest Methods D716.5.1.2 MoistureTest Methods D280.5.1.3 GritTest Methods D716.5.1.4 Coarse ParticlesTest Methods D185.5.1.5 Ignition LossTest Methods D1208.6. Keywords6.1 mica; muscovite; wet ground1This specifi
10、cation is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2012. Published November 2012. Originallyapproved in 1941. Last previous
11、edition approved in 2007 as D607 82 (2007).DOI: 10.1520/D0607-82R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM w
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15、tend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States.
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