This specification covers hot-rolled and cold-rolled steel sheet coated by the electrolytic process. Coatings can be comprised of pure metals or metal alloys. The product shall be coated on one or both surfaces with equal or differential coating masses on the two surfaces. The following seven-character format shall be used to identify the coating mass required: first and second characters; third character; fifth and fourth characters; sixth character; and seventh character. Heat analysis of the steel shall conform to the chemical requirements of the specification of the steel. Coating mass tests shall include weigh-strip-weigh method, X-ray fluorescence, Coulometric method, and referee method. Structural steel such as cold-rolled and hot-rolled sheets, shall also undergo coating bend test and shall conform with the bend test requirements.
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1.1 This specification covers hot-rolled and cold-rolled steel sheet coated by the electrolytic process. Coatings can be comprised of pure metals or metal alloys. For specific coatings, refer to Specifications A 879/A 879M and A 918.
1.2 The product shall be coated on one or both surfaces with equal or differential coating masses on the two surfaces. Sheet-coated with equal coating masses on each surface has similar levels of corrosion protection on each surface. Often, however, a higher level of corrosion protection is required on one surface than is required on the other. In these situations, one surface shall be specified with a heavier coating mass than the other. Either surface, when specified to be painted, will provide additional corrosion protection as compared to an unpainted surface.
1.3 This coating process has essentially no effect on the base metal mechanical properties, and use is permitted on any grade of hot-rolled or cold-rolled steel sheet. The coated sheet is available as Commercial Steel (CS), Drawing Steel (DS), Deep Drawing Steel (DDS), Extra-Deep Drawing Steel (EDDS), Structural Steel (SS) High-Strength Low-Alloy Steel (HSLAS), High-Strength Low-Alloy Steel with Improved Formability (HSLAS-F), Solution-Hardened Steel (SHS), or Bake-Hardenable Steel (BHS).
1.4 The values stated in SI units are to be regarded as the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A754/A754M Test Method for Coating Weight (Mass) of Metallic Coatings on Steel by X-Ray Fluorescence
A879/A879M Specification for Steel Sheet, Zinc Coated by the Electrolytic Process for Applications Requiring Designation of the Coating Mass on Each Surface
A902 Terminology Relating to Metallic Coated Steel Products
A918 Specification for Steel Sheet, Zinc-Nickel Alloy Coated by the Electrolytic Process for Applications Requiring Designation of the Coating Mass on Each Surface
A1008/A1008M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable
A1011/A1011M Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
B504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method
coatings, metallic; coatings, zinc; electrodeposited coatings; steel products; steel sheet; steel sheet-zinc coated; zinc coated (electrolytic process); zinc-coated iron/steel articles; zinc coatings; Coatings (metal)--specifications; Electrodeposited coatings--specifications; Electrolytic coatings--specifications; Hot-dip processed coatings--specifications; Metallic steel sheet--secifications; Steel--electrodeposited coatings; Zinc--specifications; Zinc alloys--specifications; Zinc-coated steel sheet--specifications;
ICS Number Code 25.220.40 (Metallic coatings)
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