ASTM-A924 2008

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A924/A924M-08a Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process

Published By	Publication Date	Number of Pages
ASTM	2008	11

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Categories: 25.220.40 - Metallic coatings, ASTM

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Description

ASTM A924/A924M-08a

Historical Standard: Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process

ASTM A924/A924M

Scope

1.1 This specification covers the general requirements that, unless otherwise specified in the product specification, apply to steel sheet in coils and cut lengths, metallic-coated on continuous lines by the hot-dip process. The product is intended for applications requiring corrosion resistance. The product specifications contain requirements for specific strength levels, heat resistance, paintability, or formability, or a combination thereof.

1.2 Subject to individual product specification provisions, steel sheet is available as Commercial Steel (CS) Types A, B, and C, Forming Steel (FS), Drawing Steel (DS), Deep Drawing Steel (DDS), Extra Deep Drawing Steel (EDDS), High Temperature Steel (HTS), Structural Steel (SS), and High Strength Low Alloy Steel (HSLAS). Steel sheet is produced with the following metallic coatings. Specific information on each of the following is contained in the individual product specification:

1.2.1 Zinc or zinc-iron alloy coated,

1.2.2 Zinc-5 % aluminum alloy coated,

1.2.3 55 % aluminum–zinc alloy coated,

1.2.4 Aluminum–coated,

1.2.5 Terne (lead-tin alloy) coated, and

1.2.6 Zinc-aluminum-magnesium alloy coated.

1.3 Products covered by this general requirements specification are described in the following product standards: Specifications A 308/A 308M; A 463/A 463M; A 653/A 653M; A 755/A 755M; A 792/A 792M; A 875/A 875M; A 929/A 929M; and A 1046/A 1046M.

1.4 Metallic-coated steel sheet is produced to various coating designations, as shown in the individual product specifications. Except for differentially coated sheet, the coating is always expressed as the total coating of both surfaces.

1.5 In case of any conflict in requirements, the requirements of the individual product specifications shall prevail over those of this general specification.

1.6 The purchaser is permitted to specify additional requirements that do not negate any of the provisions of this general specification or of the individual product specifications. Such additional requirements, the acceptance of which are subject to negotiation with the supplier, shall be included in the order information.

1.7 For purposes of determining conformance with this specification and the various product specifications referenced in 1.3, values shall be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values (except to the nearest 5 MPa for SI strength values) in accordance with the rounding method of Practice E 29.

1.8 Metallic-coated steel sheet covered by this specification is produced to thickness requirements expressed to 0.001 in. [0.01 mm] for both coils and cut lengths. The thickness is the total of the base steel and the coating.

1.9 The values stated in inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

1.10 This specification and some of the applicable product specifications are expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the product shall be furnished to inch-pound units.

1.11 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 the specification.

Keywords

aluminum-coated iron/steel; aluminum-zinc alloy-coated steel, 55 %; coating; coatings—aluminum; coatings—55 % aluminum-zinc; coatings—hot-dip; coatings—metallic; coatings—terne metal; coatings—zinc (hot-dip); coatings—zinc-5 % aluminum; coatings—zinc-aluminum-magnesium; corrosion; hot-dip; metallic-coated; sheet; steel; steel products—hot-dip coatings; steel sheet—aluminum-coated; steel sheet—terne coated; steel sheet—zinc-aluminum-magnesium alloy-coated; steel sheet—zinc-coated (galvanized); zinc-aluminum-magnesium alloy-coated steel; zinc-coated iron/steel; Aluminum-coated steel sheet–specifications; Aluminum-zinc alloy-coated steel–specifications; Corrosive service applications–plate/sheet/strip; Hot-dip processed coatings–specifications; Metallic steel sheet–secifications; Terne-coated steel sheet–specifications; Zinc-coated steel sheet–specifications

ICS Code

ICS Number Code 25.220.40 (Metallic coatings)

DOI: 10.1520/A0924_A0924M-08A

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Ordering Information Materials and Manufacture Chemical Composition TABLE 1
3	Tests for Mechanical Properties Tests for Coating Properties
4	Dimensions and Permissible Variations TABLE 2 TABLE 3
5	Finish and Condition TABLE 4 TABLE 5 TABLE 6 TABLE 7
6	Oiling Workmanship Retests and Disposition of Non-Conforming Material TABLE 8 TABLE 9 TABLE 10 TABLE 11 TABLE 12
7	TABLE 13 TABLE 14 TABLE 15 TABLE 16
8	Inspection Rejection and Rehearing Certification Packaging and Package Marking Keywords
9	X1. PRODUCT INFORMATION X1.1 Coating Thickness Measurements with Magnetic Gauges X2. MILL-APPLIED CHEMICAL TREATMENTS ON METALLIC COATED SHEET STEELS X2.1 X2.2 Formability Enhancement X2.3 Surface Protection X2.4 Formability Enhancement and Surface Protection
10	TABLE X2.1

Additional information

Standard Title	A924/A924M-08a Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process
Published Code	ASTM
Publication Date	2008
Pages Count	11
ICS Codes	25.220.40 - Metallic coatings