ASTM A684/A684M-06

Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled

ABSTRACT
This specification covers cold-rolled, high-carbon strip. The strip shall be furnished cold rolled spheroidized annealed, soft annealed, intermediate hardness, or full hard, as specified. The heat or cast analysis shall conform to that specified requirement. Hardness test and bend test shall be made to conform to the requirements specified.
SCOPE
1.1 This specification covers cold-rolled, high-carbon strip. It is furnished in the following types as specified:
1.1.1 Soft spheroidized annealed high-carbon steel is intended for applications requiring maximum cold forming. It is normally produced to give the lowest maximum Rockwell hardness for each grade.
1.1.2 Soft annealed high-carbon steel is intended for applications requiring moderate cold forming. It is produced to a maximum Rockwell hardness.
1.1.3 Intermediate hardness high-carbon steel is intended for applications where cold forming is slight or a stiff, springy product is needed, or both. It is produced to specified Rockwell hardness ranges, the maximum being higher than obtained for the annealed type.
1.1.4 Full hard high-carbon steel is intended for flat applications. It is produced to minimum Rockwell hardness requirements, which vary with grade, microstructure and gage. Full hard can be produced with either a pearlitic or spheroidized microstructure or a mixture of both. The minimum hardness should be established between the consumer and the producer.
1.2 This specification is applicable for orders in either inch-pound units or SI units.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two system may result in non-conformance with the standard.

General Information

• Status: Historical
• Publication Date: 30-Sep-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

Relations

• Replaces: ASTM A684/A684M-86(2002) - Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled
• Effective Date: 01-Oct-2006
• Replaced By: ASTM A684/A684M-08 - Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled
• Effective Date: 01-Oct-2008
• Referred By: ASTM E2685-15(2019) - Standard Specification for Steel Blades Used with the Photovoltaic Module Surface Cut Test
• Effective Date: 01-Oct-2006
• Referred By: ASTM A749/A749M-14(2021) - Standard Specification for Steel, Strip, Carbon and High-Strength, Low-Alloy, Hot-Rolled, General Requirements for
• Effective Date: 01-Oct-2006

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 684/A 684M – 06
Standard Specification for
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Steel, Strip, High-Carbon, Cold-Rolled
This standard is issued under the fixed designationA 684/A 684M; 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 A 682/A 682M Specification for Steel, Strip, High-Carbon,
Cold-Rolled, General Requirements For
1.1 This specification covers cold-rolled, high-carbon strip.
E3 Guide for Preparation of Metallographic Specimens
It is furnished in the following types as specified:
1.1.1 Soft spheroidized annealed high-carbon steel is in-
3. Terminology
tended for applications requiring maximum cold forming. It is
3.1 Number 1 or matte (dull) finish—finish without luster,
normally produced to give the lowest maximum Rockwell
produced by rolling on rolls roughened by mechanical or
hardness for each grade.
chemicalmeans.Thisfinishisespeciallysuitableforlacqueror
1.1.2 Soft annealed high-carbon steel is intended for appli-
paint adhesion, and is beneficial in aiding drawing operations
cations requiring moderate cold forming. It is produced to a
by reducing the contact friction between the die and the strip.
maximum Rockwell hardness.
3.2 Number 2 (regular bright) finish—finish produced by
1.1.3 Intermediate hardness high-carbon steel is intended
rolling on rolls having a moderately smooth finish. It is less
for applications where cold forming is slight or a stiff, springy
suitable that No. 1 (matte) finish for cold forming and may be
product is needed, or both. It is produced to specified Rockwell
applicable for certain types of plating.
hardness ranges, the maximum being higher than obtained for
3.3 spheroidizing—the heating and cooling of the strip in
the annealed type.
controlled conditions (annealing) to produce a spheroidal or
1.1.4 Full hard high-carbon steel is intended for flat appli-
globular form of carbide microconstituent.
cations. It is produced to minimum Rockwell hardness require-
3.4 stretcher strains—elongated markings that appear on
ments, which vary with grade, microstructure and gage. Full
thesurfaceofthestripwhendeadsoft(fullyannealed)material
hard can be produced with either a pearlitic or spheroidized
is deformed beyond its yield point (see 5.2).
microstructure or a mixture of both. The minimum hardness
should be established between the consumer and the producer.
4. Ordering Information
1.2 This specification is applicable for orders in either
4.1 Orders for material under this specification shall include
inch-pound units or SI units.
the following information:
1.3 The values stated in either SI units or inch-pound units
4.1.1 ASTM designation and date of issue,
are to be regarded separately as standard. The values stated in
4.1.2 Name, type, and steel grade number,
each system may not be exact equivalents; therefore, each
4.1.3 Hardness (if intermediate or restricted hardness is
system shall be used independently of the other. Combining
specified),
values from the two systems may result in non-conformance
4.1.4 Decarburization (if required),
with the standard.
4.1.5 Application,
4.1.6 Dimensions,
2. Referenced Documents
2 4.1.7 Coil size requirements,
2.1 ASTM Standards:
4.1.8 Edge (indicate No. 1 round, square, etc.),
A 370 Test Methods and Definitions for MechanicalTesting
4.1.9 Finish (indicate and specify),
of Steel Products
4.1.10 Conditions (specify whether material is oiled or dry),
4.1.11 Package (bare coils, skid, etc.),
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4.1.12 Cast or heat (formerly ladle) analysis report (if
Stainless Steel and RelatedAlloys, and is the direct responsibility of Subcommittee
required), and
A01.19 on Steel Sheet and Strip.
Current edition approved Oct. 1, 2006. Published October 2006. Originally 4.1.13 Special requirements (if required).
approved in 1973. Last previous edition approved in 2002 as A 684/A 684M – 86
NOTE 1—A typical ordering description is as follows: ASTM A 684
(2002).
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or dated ———Cold Rolled, High-Carbon Soft, Strip, Spheroidized 1064,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 0.042 in. by 6 in. by coil (16 in. ID by 40 in. OD max), No. 5 Edge, No.
Standards volume information, refer to the standard’s Document Summary page on
2 Finish, Oiled, Bare Skid or
the ASTM website.
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