ASTM_D_520_-_00_2011.pdf

Designation:D52000(Reapproved 2011)Standard Specification forZinc Dust Pigment1This standard is issued under the fixed designation D520;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 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 three types of zinc dust,for useas a pigment 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:2B214 Test Method for Sieve Analysis of Metal PowdersD185 Test Methods for Coarse Particles in PigmentsD521 Test Methods for Chemical Analysis of Zinc Dust(Metallic Zinc Powder)E40 Method for Chemical Analysis of Slab Zinc(Spelter)(Withdrawn 1993)33.Composition and Properties3.1 The pigments shall consist substantially of metallic zincand shall conform to the requirements for composition pre-scribed 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,or 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 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 test methods shall be mutually agreed upon between thepurchaser and the seller.5.1.1 Total and Metallic ZincTest Methods D521.5.1.2 Lead,Cadmium,and IronSections 8,18.2,and 22,respectively,of Test Methods E40.5.1.3 Oily or Fatty Matter,or BothTest Methods D521.5.1.4 Coarse ParticlesTest Method B214 or Test MethodsD185.6.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 June 1,2011.Published June 2011.Originallyapproved in 1939.Last previous edition approved in 2005 as D520 00(2005).DOI:10.1520/D0520-00R11.2For 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 website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity of any such patent rights,and the riskof infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,which you may attend.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.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).Permission rights to photocopy the standard may also be secured from the ASTM website(www.astm.org/COPYRIGHT/).TABLE 1 Requirements for CompositionType IType IIType IIITotal zinc,calculated as Zn,min,%97.598.099.0Metallic zinc,min,%94.094.096.0Material other than metallic zinc,ZnO,and admixed CaO,where applicablemax%0.75.Calcium,calculated as CaO,max,%0.70.7.Lead,calculated as Pb,max,%.0.010.002Iron,calculated as Fe,max,%.0.020.002Cadmium,calculated as Cd,max,%.0.010.001Chlorine,calculated as Cl,max,%.