1. Scope 1.1 This test method covers procedures for determining the weight [mass] of coating on iron or steel sheet, wire, and other articles in which the coating is zinc or a zinc alloy, such as zinc-5% aluminum (including zinc-5% aluminum-mischmetal and zinc-5% aluminum-0.1% magnesium) or 55% aluminum-zinc. In the body of this test method, reference to zinc coating shall be interpreted to also include zinc alloy coating except where specifically stated otherwise. 1.2 The final results determined by this test method shall be expressed in inch-pound units or SI units, depending on the units used in the material specification to which the results are to be compared. Certain portions of the procedure involving determination of specimen weight [mass] have traditionally been performed in SI units, and corresponding inch-pound units are not included. 1.3 In this test method, the quantity of material is described in terms of weight [mass]. Weight is the force describing the gravitational attraction of the earth on a quantity of material. In general usage on the surface of the earth, mass of an unknown quantity is determined by comparing with a known quantity (either directly or indirectly and ignoring the buoyancy of the air) as indicated by the attraction of the earths gravity, thus weight is actually determined. See Appendix X1 of Terminology E12 for further discussion of weight and mass. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazards statements see 5.1.
Số hiệu tiêu chuẩn
ASTM A 90/A 90Ma
Tên tiêu chuẩn
Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
Ngày phát hành
1995-00-00
Từ khóa
Coated * Coatings * Electrical engineering * Iron * Materials * Steel products * Steels * Testing * Weights * Zinc coatings