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1.1 This practice defines procedures for measuring the thickness of nonmetallic and metallic-coated steel sheet. Thickness is a significant quality characteristic of steel sheet products. The ability to accurately measure thickness using hand micrometers is critical in determining product conformance to specifications. The methods described are designed and intended for use in both laboratory and plant situations and their environments.
1.2 The flat steel product shall conform to all the requirements of the appropriate specifications as follows: Specifications A924/A924M and A917.
1.3 Quantitative limits are not addressed and are established in the general requirements, or individual product specifications, or both; or when applicable, as agreed to between supplier and user.
1.4 This specification is applicable to orders in either inch-pound units or SI units. Values in inch-pound and SI units are not necessarily equivalent. Within the text, SI units are shown in brackets. Each system shall be used independently of the other.
1.5 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A902 Terminology Relating to Metallic Coated Steel Products
A917 Specification for Steel Sheet, Coated by the Electrolytic Process for Applications Requiring Designation of the Coating Mass on Each Surface (General Requirements)
A924/A924M Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process
ICS Number Code 25.220.40 (Metallic coatings)
UNSPSC Code 11101704(Steel); 41111601(Micrometers)