1、Designation: D 267 82 (Reapproved 2008)1Standard Specification forGold Bronze Powder1This standard is issued under the fixed designation D 267; 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
2、parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEThe units statement in subsection 1.2 was corrected editorially in July 2008.1. Scope1.1 This specification covers the materials commerciallyknown as go
3、ld bronze, pale gold bronze, and rich gold bronzepowders.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 A
4、STM Standards:2D13 Specification for Spirits of TurpentineD 185 Test Methods for Coarse Particles in PigmentsD 480 Test Methods for Sampling and Testing of FlakedAluminum Powders and Pastes2.2 U.S. Federal Specification:A-A-1800 Water-Resisting Spar Varnish33. Composition and Properties3.1 The bronz
5、e powder shall be made from new ingotmetals. It shall consist of fine polished flakes containing notless than 3 % of fatty or oily matter (polishing lubricant) togive good “leafing” properties.3.2 The residue retained on a No. 100 (150-m) sieve, usingalcohol as the wash liquid, shall not exceed 0.2
6、% (in accor-dance with Test Methods D 185).3.3 The powder shall have good “leafing” properties. (By“leafing” is understood the property of forming an apparentlycontinuous brilliant film over the entire free surface of amixture of the powder in a suitable liquid (Note 1), within 1min after cessation
7、of stirring the mixture.) In testing forleafing properties the powder shall be mixed in the proportionof 3 to 4 lb (370 to 475 g/L) to a gallon (3.8 L) of the liquid.As thus mixed it shall also give a free flowing, smooth,continuous coating in accordance with Test Methods D 480.NOTE 1A suitable liqu
8、id is made by mixing spar varnish conformingto the U. S. Federal Specification for Water-Resisting Spar Varnish (No.A-A-1800) with turpentine conforming to Specification D13 in suchproportions that the mixture will have a viscosity of 0.65 to 0.85 poises (Bto C on the Gardner-Holdt scale).3.4 The go
9、ld bronze powder shall be suitable for makinggold bronze paint. It shall match in shade and fineness areference sample mutually agreed upon by the purchaser andthe seller.4. Sampling4.1 Two samples shall be taken at random from differentpackages from each lot, batch, days pack, or other unit ofprodu
10、ction 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 option of thepurchas
11、er, 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 Test shall be conducted in accordance with the appro-priate methods of ASTM International, where applicable. Testprocedures not covered
12、 by ASTM methods shall be mutuallyagreed upon between the purchaser and the seller.6. Keywords6.1 bronze powders; leafing; spar varnish1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubc
13、ommittee D01.31 on Pigment Specifications.Current edition approved July 1, 2008. Published August 2008. Originallyapproved in 1927. Last previous edition approved in 2003 as D 267 82 (2003).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servi
14、ceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1Copyright ASTM I
15、nternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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 determ
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17、ithdrawn. 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
18、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 267 82 (2008)12
