1. Scope 1.1 This test method covers procedures for determining the weight [mass] of coating on aluminum-coated iron or steel sheets and wire, and on other aluminum-coated iron and steel articles. 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 gravitation 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 a specific precautionary statement, see Note 1.
Số hiệu tiêu chuẩn
ASTM A 428/A 428M
Tên tiêu chuẩn
Standard Test Method for Weight [Mass] of Coating on Aluminum-Coated Iron or Steel Articles
Ngày phát hành
1995-00-00
Tiêu chuẩn tương đương
GB/T 18226 (2000), NEQ
Từ khóa
Coated * Coatings * Iron * Steel products * Steels * Testing * Weights