ASTM D520-2019 pdf free download

ASTM D520-2019 pdf free download.Standard Specification for Zinc Dust Pigment
1. Scope
1.1 This specification covers three types ofzinc dust, for use as a pigment in paints. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Composition and Properties
3.1 The pigments shall consist substantially of metallic zinc and shall conform to the requirements for composition pre- scribed in Table 1. 3.2 In such physical properties as are specified by the purchaser, the pigment shall satisfactorily match a reference sample mutually agreed upon between the purchaser and the seller.
4. Sampling
4.1 Two samples shall be taken at random from different packages from each lot, batch, day’s pack, or other unit of production in a shipment. When no markings distinguishing between units of production appear, samples shall be taken from different packages in the ratio of two samples for each 5000 kg (10 000 lb), except that for shipments of less than 5000 kg, two samples shall be taken. At the option of the purchaser, the samples may be tested separately or after blending in equal quantities the samples from the same production unit to form a composite sample.
5. Test Methods
5.1 Tests shall be conducted in accordance with the follow- ing ASTM test methods. Test procedures not covered by these ASTM test methods shall be mutually agreed upon between the purchaser and the seller. 5.1.1 Total and Metallic Zinc—Test Methods D521. 5.1.2 Lead, Cadmium, and Iron—Sections 8, 18.2, and 22, respectively, of Test Methods E40. 5.1.3 Oily or Fatty Matter, or Both—Test Methods D521. 5.1.4 Coarse Particles—Test Method B214 or Test Methods D185.
6. Keywords
6.1 pigment; zinc