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This specification covers coils and cut lengths of steel sheets produced by the twin-roll cast process and zinc-coated (galvanized) by the hot-dip process. The material is available in several designations, categorized broadly as commercial steel (CS Types A, B, and C), structural steel (SS), and high strength low alloy steel (HSLAS). Steel samples shall undergo heat analysis and adhere to chemical composition requirements based on their respective designations. Materials shall also conform to yield strength, tensile strength, and elongation requirements in accordance to grade, class, or both. Zinc coatings shall be tested and conform to weight/mass and bending requirements in relation to coating thickness.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers steel sheet, produced by the Twin-Roll Cast Process (see Appendix X2) and zinc-coated (galvanized) by the hot-dip process in coils and cut lengths.
Note 1—See Appendix X2 for a description of the Twin-Roll Cast process.
1.2 The product is produced in various zinc coating weights [masses] or coating designations as shown in Table 1.
1.3 Product furnished under this specification shall conform to the applicable requirements of the latest issue of Specification A924/A924M unless otherwise provided herein.
1.4 The product is available in a number of designations, grades and classes and in the two following general categories that are designed to be compatible with different application requirements.
1.4.1 Steels with mandatory chemical requirements and typical mechanical properties.
1.4.2 Steels with mandatory chemical requirements and mandatory mechanical properties.
1.5 This material is available in the following sizes:
1.5.1 Thickness—up to 0.078 in. [2.0 mm]
1.5.2 Width—up to 79 in. [2000 mm]
1.6 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of this specification.
1.7 This specification is applicable to orders in either inch-pound units (as A1063) or SI units (as A1063M). 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.
1.8 Unless the order specifies the “M” designation (SI units), the product shall be furnished to inch-pound units.
1.9 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.
TABLE 1 Weight [Mass] of Coating RequirementsA, B, C
Note— Use the information provided in 8.1.2 to obtain the approximate coating thickness from the coating weight [mass].
|Triple-Spot Test||Single-Spot Test|
|Type||Coating Designation||Total Both Sides, oz/ft2||One Side, oz/ft2||Total Both Sides, oz/ft2|
|Zinc||G01C||no minimum||no minimum||no minimum|
|Type||Coating Designation||Total Both Sides, g/m2||One Side, g/m2||Total Both Sides, g/m2|
|Zinc||Z001C||no minimum||no minimum||no minimum|
A The coating designation number is the term by which this product is specified. Because of the many variables and changing conditions that are characteristic of continuous hot-dip coating lines, the zinc coating is not always evenly divided between the two surfaces of a coated sheet; nor is it always evenly distributed from edge to edge. However, the minimum triple-spot average coating weight (mass) on any one side shall not be less than 40 % of the single-spot requirement.
B As it is an established fact that the atmospheric corrosion resistance of zinc coated sheet products is a direct function of coating thickness (weight (mass)), the selection of thinner (lighter) coating designations will result in almost linearly reduced corrosion performance of the coating. For example, heavier galvanized coatings perform adequately in bold atmospheric exposure whereas the lighter coatings are often further coated with paint or a similar barrier coating for increased corrosion resistance. Because of this relationship, products carrying the statement “meets ASTM A1063/A1063Mrequirements” should also specify the particular coating designation.
C No minimum means that there are no established minimum requirements for triple- and single-spot tests.
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
A568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for
A902 Terminology Relating to Metallic Coated Steel Products
A924/A924M Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process
ICS Number Code 77.140.50 (Flat steel products and semi-products)
UNSPSC Code 30264000(Carbon steel sheets)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM A1063 / A1063M-11a, Standard Specification for Steel Sheet, Twin-Roll Cast, Zinc-Coated (Galvanized) by the Hot-Dip Process, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top