1、Designation: D 520 00 (Reapproved 2005)Standard Specification forZinc Dust Pigment1This standard is issued under the fixed designation D 520; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pa
2、rentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 three types of zinc dust, for useas a p
3、igment in paints.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2B 214 Test Method for Sieve Analysis of Metal PowdersD 185 Test Methods for Coarse Particles in Pigments,Pastes, an
4、d PaintsD 521 Test Methods for Chemical Analysis of Zinc Dust(Metallic Zinc Powder)E40 Test Methods for Chemical Analysis of Slab Zinc(Spelter)33. Composition and Properties3.1 The pigments shall consist substantially of metallic zincand shall conform to the requirements for composition pre-scribed
5、in Table 1.3.2 In such physical properties as are specified by thepurchaser, the pigment shall satisfactorily match a referencesample mutually agreed upon between the purchaser and theseller.4. Sampling4.1 Two samples shall be taken at random from differentpackages from each lot, batch, days pack, o
6、r 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 each5000 kg (10 000 lb), except that for shipments of less than5000 kg, two samples shall be taken. At the option
7、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 follow-ing ASTM test methods. Test procedures not covered by theseASTM tes
8、t methods shall be mutually agreed upon between thepurchaser and the seller.5.1.1 Total and Metallic ZincTest Methods D 521.5.1.2 Lead, Cadmium, and IronSections 8, 18.2, and 22,respectively, of Test Methods E40.5.1.3 Oily or Fatty Matter, or BothTest Methods D 521.5.1.4 Coarse ParticlesTest Method
9、B 214 or Test Meth-ods D 185.6. Keywords6.1 pigment; zinc1This specification 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 May 15, 200
10、5. Published June 2005. Originallyapproved in 1939. Last previous edition approved in 2000 as D 520 00.2For 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
11、 Document Summary page onthe ASTM website.3Withdrawn.TABLE 1 Requirements for CompositionType I Type II Type IIITotal zinc, calculated as Zn, min, % 97.5 98.0 99.0Metallic zinc, min, % 94.0 94.0 96.0Material other than metallic zinc, ZnO,and admixed CaO, where applicablemax % 0.75 . .Calcium, calcul
12、ated as CaO, max, % 0.7 0.7 .Lead, calculated as Pb, max, % . 0.01 0.002Iron, calculated as Fe, max, % . 0.02 0.002Cadmium, calculated as Cd, max, % . 0.01 0.001Chlorine, calculated as Cl, max, % . 0.01 .Sulfur, calculated as SO2, max, % . 0.01 .Moisture and other volatile matter, max, %0.10 0.10 0.
13、10Oily or fatty matter, or both, max, % . 0.05 .Zinc oxide (ZnO), max, % 6.0 remainder remainderCoarse particles, max, %:Total residue retained on a 150-m(No. 100) sievenone 0.1 0.1Total residue retained on a 75-m(No. 200) sieve. 0.8 0.8Total residue retained on a 45-m(No. 325) sieve4.0 3.0 3.01Copy
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17、u 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. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 520 00 (2005)2
