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ASTM

ASTM A424-06

(Specification)

Standard Specification for Steel, Sheet, for Porcelain Enameling

Standard Specification for Steel, Sheet, for Porcelain Enameling

ABSTRACT
This specification covers standard requirements for sheet steel in coils and cut lengths for porcelain enameling. Heat analysis of Type I, Type II, and Type III steels shall conform to the prescribed chemical composition for carbon, manganese, phosphorus, sulfur, and others. However, an exception is made on carbon, since heat analysis of carbon is not appropriate for Type I. The material shall also conform to the required mechanical properties such as bending and formability.
SCOPE
1.1 This specification covers sheet steel in coils and cut lengths for porcelain enameling. The compositions and processing of these steels are such that articles for porcelain enameling may be fabricated from them and, under proper conditions, enameled. The steels are furnished as Type I, Type II, and Type III. Type I and Type II are supplied in two designations, Commercial Steel and Drawing Steel. Type III steel is interstitial-free and does not require a designation.

General Information

Status
Historical
Publication Date
28-Feb-2006
ICS
77.140.50 - Flat steel products and semi-products
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.19 - Steel Sheet and Strip
Current Stage
Ref Project

Relations

Replaces
ASTM A424-00 - Standard Specification for Steel, Sheet, for Porcelain Enameling
Effective Date
01-Mar-2006
Replaced By
ASTM A424/A424M-09 - Standard Specification for Steel, Sheet, for Porcelain Enameling
Effective Date
01-Apr-2009
Referred By
ASTM C839-82(2020) - Standard Test Method for Compressive Stress of Porcelain Enamels by Loaded-Beam Method
Effective Date
01-Mar-2006
Referred By
ASTM C286-22 - Standard Terminology Relating to Porcelain Enamel and Ceramic-Metal Systems
Effective Date
01-Mar-2006

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ASTM A424-06 - Standard Specification for Steel, Sheet, for Porcelain EnamelingASTM A424-06 - Standard Specification for Steel, Sheet, for Porcelain Enameling
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ASTM A424-06 - Standard Specification for Steel, Sheet, for Porcelain Enameling
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 424 – 06
Standard Specification for
1
Steel, Sheet, for Porcelain Enameling
This standard is issued under the fixed designation A 424; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 4.1.1 Type I steel has an extremely low carbon level
achieved through sheet decarburization. This material is suit-
1.1 This specification covers sheet steel in coils and cut
able for direct cover coat enameling practice, but this require-
lengths for porcelain enameling. The compositions and pro-
ment must be indicated by the purchaser in accordance with
cessing of these steels are such that articles for porcelain
5.1.6. This material is also suitable for ground and cover coat
enameling may be fabricated from them and, under proper
enameling practice. It has good sag resistance and good
conditions, enameled. The steels are furnished as Type I, Type
formability.
II, and Type III. Type I and Type II are supplied in two
4.1.2 Type II steel is suitable for applications where ground
designations, Commercial Steel and Drawing Steel. Type III
and cover coat enameling operations are employed. The
steel is interstitial-free and does not require a designation.
composition of the Type II steel is obtained in melting
2. Referenced Documents
operations.
2
4.1.3 Type III is an interstitial-free steel and is suitable for
2.1 ASTM Standards:
applications where ground and cover coat enameling opera-
A 568/A 568M Specification for Steel, Sheet, Carbon,
tions are employed. The composition of the Type III steel is
Structural, and High-Strength, Low-Alloy, Hot-Rolled and
obtained in melting operations. It has good sag resistance and
Cold-Rolled, General Requirements for
excellent formability.
A 941 Terminology Relating to Steel, Stainless Steel, Re-
4.2 Product Designations:
lated Alloys, and Ferroalloys
4.2.1 Commercial Steel is intended for parts where bend-
3. Terminology
ing, moderate forming, or moderate drawing may be involved.
4.2.2 Drawing Steel is intended for fabricating identified
3.1 Definitions—For definitions of other terms used in this
parts where the draw is particularly severe or where the
specification, refer to Terminology A 941.
material shall be essentially free of changes in mechanical
3.2 Definitions of Terms Specific to This Standard:
properties over a period of time. Drawing Steel should be
3.3 base coat—also known as ground coat. This coating
specified where the formed material shall be essentially free of
layer is applied directly to the steel and promotes adhesion of
such surface disturbances as stretcher strains or fluting without
the coating system to the steel.
the need of prior roller leveling.
3.4 cover coat—This coating layer is usually applied over
4.2.3 Type III interstitial-free steel is intended for fabricat-
the base or ground coat to improve the appearance and provide
ing identified parts where the most severe drawing or forming
the proper color.
is involved and where the material must be free of changes in
3.5 direct cover coat—This refers to a single coating
mechanical properties over a period of time and free of such
application that provides both adequate adhesion and appear-
surface disturbances as stretcher strains or fluting without the
ance.
need of prior roller leveling.
4. Classification
4.3 Porcelain Enamels:
4.3.1 Ground coat enamels are glasses used primarily for
4.1 Types:
their bonding characteristics.They may be applied after proper
metal preparation (either pickle or pickle-free depending on
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
enamel system). These glasses may be applied as either dry
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
powders or wet slips. This type enamel is suitable for all three
A01.19 on Steel Sheet and Strip.
Current edition approved March 1, 2006. Published March 2006. Originally types of steel (Type I, II, or III).
approved in 1958. Last previous edition approved in 2000 as A 424 – 00.
4.3.2 Cover coat enamels are appearance glasses applied for
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specific color, corrosion, alkali resistance, and so forth. These
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
enamels may be applied directly to Type I steels after suitable
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM
...

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Tensile Strength, min  
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SCOPE
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SCOPE
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SCOPE
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