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ASTM A924.pdf
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ASTM A924.pdf
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Designation: A 924/A 924M – 06
Standard Specification for
General Requirements for Steel Sheet, Metallic-Coated by
the Hot-Dip Process
1
This standard is issued under the fixed designation A 924/A 924M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. 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 continu-
ous lines by the hot-dip process. The product is intended for
applications requiring corrosion resistance. The product speci-
fications 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 Tem-
perature 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 specifica-
tion:
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, and
1.2.5 Terne (lead-tin alloy) coated.
1.3 Products covered by this general requirements specifi-
cation are described in the following product standards: Speci-
fications
A 308/A 308M; A 463/A 463M; A 653/A 653M;
A 755/A 755M; A 792/A 792M; A 875/A 875M; and A 929/
A 929M
.
1.4 Metallic-coated steel sheet is produced to various coat-
ing designations, as shown in the individual product specifica-
tions. 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 require-
ments 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
E29.
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 inde-
pendently 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” speci-
fication 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.
2. Referenced Documents
2.1 ASTM Standards:
2
A 90/A 90M Test Method for Weight [Mass] of Coating on
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A 308/A 308M Specification for Steel Sheet, Terne (Lead-
Tin Alloy) Coated by the Hot-Dip Process
1
This specification is under the jurisdiction of ASTM Committee A05 on
Metallic-Coated Iron and Steel Products and is the direct responsibility of
Subcommittee A05.11 on Sheet Specifications.
Current edition approved June 15, 2006. Published June 2006. Originally
approved in 1994. Last previous edition approved in 2004 as A 924/A 924M - 04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
1
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
Copyright ASTM International
Provided by IHS under license with ASTM
Not for Resale
No reproduction or networking permitted without license from IHS
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