ASTM A684/A684M-86(1998)
(Specification)Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled
Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled
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 (as A684) or SI units (A684M).
General Information
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 684/A684M – 86 (Reapproved 1998)
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Steel, Strip, High-Carbon, Cold-Rolled
This standard is issued under the fixed designation A 684/A684M; 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 produced by rolling on rolls roughened by mechanical or
chemical means. This finish is especially suitable for lacquer or
1.1 This specification covers cold-rolled, high-carbon strip.
paint adhesion, and is beneficial in aiding drawing operations
It is furnished in the following types as specified:
by reducing the contact friction between the die and the strip.
1.1.1 Soft spheroidized annealed high-carbon steel is in-
3.2 Number 2 (regular bright) finish—finish produced by
tended for applications requiring maximum cold forming. It is
rolling on rolls having a moderately smooth finish. It is less
normally produced to give the lowest maximum Rockwell
suitable that No. 1 (matte) finish for cold forming and may be
hardness for each grade.
applicable for certain types of plating.
1.1.2 Soft annealed high-carbon steel is intended for appli-
3.3 spheroidizing—the heating and cooling of the strip in
cations requiring moderate cold forming. It is produced to a
controlled conditions (annealing) to produce a spheroidal or
maximum Rockwell hardness.
globular form of carbide microconstituent.
1.1.3 Intermediate hardness high-carbon steel is intended
3.4 stretcher strains—elongated markings that appear on
for applications where cold forming is slight or a stiff, springy
the surface of the strip when dead soft (fully annealed) material
product is needed, or both. It is produced to specified Rockwell
is deformed beyond its yield point (see 5.2).
hardness ranges, the maximum being higher than obtained for
the annealed type.
4. Ordering Information
1.1.4 Full hard high-carbon steel is intended for flat appli-
4.1 Orders for material under this specification shall include
cations. It is produced to minimum Rockwell hardness require-
the following information:
ments, which vary with grade, microstructure and gage. Full
4.1.1 ASTM designation and date of issue,
hard can be produced with either a pearlitic or spheroidized
4.1.2 Name, type, and steel grade number,
microstructure or a mixture of both. The minimum hardness
4.1.3 Hardness (if intermediate or restricted hardness is
should be established between the consumer and the producer.
specified),
1.2 This specification is applicable for orders in either
4.1.4 Decarburization (if required),
inch-pound units (as A 684) or SI units (A 684M).
4.1.5 Application,
2. Referenced Documents 4.1.6 Dimensions,
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 Mechanical Testing
2 4.1.9 Finish (indicate and specify),
of Steel Products
4.1.10 Conditions (specify whether material is oiled or dry),
A 682 Specification for Steel, Strip, High-Carbon, Cold-
2 4.1.11 Package (bare coils, skid, etc.),
Rolled, Spring Quality, General Requirements for
4.1.12 Cast or heat (formerly ladle) analysis report (if
A 682M Specification for Steel, Strip, High-Carbon, Cold-
required), and
Rolled, Spring Quality, General Requirements for [Met-
4.1.13 Special requirements (if required).
ric]
E 3 Methods of Preparation of Metallographic Specimens
NOTE 1—A typical ordering description is as follows: ASTM A 684
dated ———Cold Rolled, High-Carbon Soft, Strip, Spheroidized 1064,
3. Terminology
0.042 in. by 6 in. by coil (16 in. ID by 40 in. OD max), No. 5 Edge, No.
2 Finish, Oiled, Bare Skid or
3.1 Number 1 or matte (dull) finish—finish without luster,
“ASTM A 684 dated ———Cold Rolled, High-Carbon, Soft, Strip,
Spheroidized 1064, 0.6 mm by 200 mm by coil (400 mm ID by 7500 mm
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
OD max), No. 3 Edge, No. 2 Finish, Oiled, Bare Skid.”
Stainless Steel and Related Alloys, and is the direct responsibility of Subcommittee
A01.19 on Steel Sheet and Strip.
5. Manufacture
Current edition approved Aug. 29, 1986. Published October 1986. Originally
e1
published as A 684 – 73. Last previous edition A 684 – 81 .
5.1 Condition:
Annual Book of ASTM Standards, Vol 01.03.
5.1.1 The strip shall be furnished cold rolled spheroidized
Annual Book of ASTM Standards, Vol 03.01.
NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬replaced¬by¬a¬new¬version¬or¬discontinued.¬
Contact¬ASTM¬International¬(www.astm.org)¬for¬the¬latest¬information.¬
A 684/A684M
annealed, soft annealed, intermediate hardness, or full hard, as 8.1.1 Spheroidized Annealed and Annealed Types—When
specified. furnished spheroidized annealed or annealed, the hardness of
5.1.2 Intermediate hardness may be obtained by either the strip shall not exceed the maximum values specified in Fig.
rolling the strip after final annealing or by varying the 1 and Fig. 2 for the applicable carbon range and type.
annealing treatment, or both.
8.1.2 Intermediate Hardness Type—When furnished as in-
5.2 Pinch Pass—Spheroidized annealed and annealed ma-
termediate hardness, the hardness of the strip shall conform to
terial may be pinch rolled after the final anneal to improve
the range specified on the purchase order. The maximum
flatness, uniformly oil, modify surfac
...
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