ASTM A682/A682M-00
(Specification)Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled, General Requirements For
Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled, General Requirements For
SCOPE
1.1 This specification covers the general requirements for cold-rolled carbon spring steel strip in coils or cut lengths. Strip is classified as product that is 0.3000 in. (7.6 mm) or less in thickness and over 1/2 to 23 15/16 in. (12.5 to 600 mm) in width, inclusive. Strip tolerance products may be available in widths wider than 2315/16 in. (600 mm) by agreement between purchaser and supplier; however, such products are technically classified as cold-rolled sheet.
1.2 The maximum of the specified carbon range is over 0.25 % to 1.35 %, inclusive.
1.3 The above shall apply to the cold-rolled carbon spring steel strip furnished under each of the following specifications issued by ASTM:Title of Specification ASTM DesignationSteel, Strip, High Carbon,A 684/A 684MCold Rolled
1.4 The tolerances in this specification are different than those in Specification A 568/A 568M and Specification A 109/A 109M.
1.5 For the purpose of determining conformance with this specification, values shall be rounded to the nearest unit in the right hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice E 29.
1.6 The metric portions of the tables herein list permissible variations in dimensions and mass (see Note 1) in SI (metric) units. The values listed are not exact conversions of the values listed in the inch-pound tables but instead are rounded or rationalized values. Conformance to SI tolerances is mandatory when the "M" specification is used.
Note 1—The term weight is used when inch-pound units are the standard. However, under SI the preferred term in mass.
1.7 The values stated in either inch-pound units or SI units are to be regarded 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. Combining values from the two systems will result in nonconformance with the specification.
1.8 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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An American National Standard
Designation: A 682/A 682M – 00
Standard Specification for
Steel, Strip, High-Carbon, Cold-Rolled, General
Requirements For
This standard is issued under the fixed designation A 682/A 682M; 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 exact equivalents; therefore, each system must be used inde-
pendently of the other. Combining values from the two systems
1.1 This specification covers the general requirements for
will result in nonconformance with the specification.
cold-rolled carbon spring steel strip in coils or cut lengths.
1.8 This specification is expressed in both inch-pound units
Strip is classified as product that is 0.3000 in. (7.6 mm) or less
1 15 and SI units. However, unless the order specifies the applicable
in thickness and over ⁄2 to 23 ⁄16 in. (12.5 to 600 mm) in
“M” specification designation (SI units), the material shall be
width, inclusive. Strip tolerance products may be available in
furnished to inch-pound units.
widths wider than 23 ⁄16 in. (600 mm) by agreement between
purchaser and supplier; however, such products are technically
2. Referenced Documents
classified as cold-rolled sheet.
2.1 ASTM Standards:
1.2 The maximum of the specified carbon range is over
A 109/ A 109M Specification for Steel, Strip, Carbon,
0.25 % to 1.35 %, inclusive.
Cold-Rolled
1.3 The above shall apply to the cold-rolled carbon spring
A 370 Test Methods and Definitions for Mechanical Testing
steel strip furnished under each of the following specifications
of Steel Products
issued by ASTM:
A 568/ A 568M Specification for Steel, Sheet, Carbon, and
ASTM
High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
Title of Specification Designation
Steel, Strip, High Carbon, A 684/A 684M
General Requirements for
Cold Rolled
A 680/A 680M Specification for Steel-Hydrocarbon, Strip,
1.4 The tolerances in this specification are different than Cold-Rolled Hard Untempered Quality
Specification A 568/A 568M and Specification A 109/A 109M. A 684/A 684M Specification for Steel, Strip, High Carbon,
1.5 For the purpose of determining conformance with this
Cold Rolled
specification, values shall be rounded to the nearest unit in the A 700 Practices for Packaging, Marking, and Loading
right hand place of figures used in expressing the limiting
Methods for Steel Products for Domestic Shipment
values in accordance with the rounding method of Practice A 751 Test Methods, Practices, and Terminology for
E 29.
Chemical Analysis of Steel Products
1.6 The metric portions of the tables herein list permissible A 941 Terminology Relating to Steel, Stainless Steel, Re-
variations in dimensions and mass (see Note 1) in SI (metric) lated Alloys, and Ferroalloys
units. The values listed are not exact conversions of the values E 3 Methods of Preparation of Metallographic Specimens
listed in the inch-pound tables, but instead are rounded or E 29 Practice for Using Significant Digits in Test Data to
rationalized values. Conformance to SI tolerances is mandatory Determine Conformance with Specifications
when the “M” specification is used. E 112 Test Methods for Determining Average Grain Size
E 527 Practice for Numbering Metals and Alloys (UNS)
NOTE 1—The term weight is used when inch-pound units are the
2.2 Federal Standards:
standard. However, under SI the preferred term in mass.
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
1.7 The values stated in either inch-pound units or SI units
Fed. Std. No. 183 Continuous Identification Marking of
are to be regarded as standard. Within the text, the SI units are
shown in brackets. The values stated in each system are not
Annual Book of ASTM Standards, Vol 01.03.
Annual Book of ASTM Standards, Vol 01.05.
1 4
This specification is under the jurisdiction of ASTM Committee A-1 on Steel, Annual Book of ASTM Standards, Vol 01.01.
Stainless Steel and Related Alloys, and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 03.01.
A01.19 on Sheet Steel and Steel Sheets. Annual Book of ASTM Standards, Vol 14.02.
Current edition approved May 10, 2000. Published July 2000. Originally Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
published as A 682 – 73. Last previous edition A 682 – 98a. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 682/A 682M
TABLE 1 Heat (Formerly Ladle) Analysis Limits and Ranges
Iron and Steel Products
2.3 Military Standards: Standard Chemical Limits and
Element Ranges, Limit or Max of Range, %
MIL-STD-129 Marking for Shipping and Storage
Specified Range
MIL-STD-163 Steel Mill Products Preparation for Ship-
A
Carbon over 0.25 to 0.30, incl 0.06
ment and Storage
over 0.30 to 0.40, incl 0.07
2.4 SAE Standard:
over 0.40 to 0.60, incl 0.08
over 0.60 to 0.80, incl 0.11
J 1086 Recommended Practice for Numbering Metals and
over 0.80 to 1.35, incl 0.14
Alloys (UNS)
Manganese to 0.50, incl 0.20
3. Terminology
over 0.50 to 1.15, incl 0.30
over 1.15 to 1.65, incl 0.35
3.1 Definitions:
3.1.1 burr—metal displaced beyond the plane of the surface
Phosphorous to 0.08, incl 0.03
over 0.08 to 0.15, incl 0.05
by slitting or shearing.
3.1.2 decarburization—refer to Terminology A 941.
Sulfur to 0.08, incl 0.03
3.1.3 lot—the quantity of material of the same type, size,
over 0.08 to 0.15, incl 0.05
over 0.15 to 0.23, incl 0.07
and finish produced at one time from the same cast or heat, and
over 0.23 to 0.33, incl 0.10
heat treated in the same heat-treatment cycle.
Silicon to 0.20, incl 0.10
4. General Requirements for Delivery
over 0.20 to 0.30, incl 0.15
over 0.30 to 0.60, incl 0.30
4.1 The requirements of the purchase order, the individual
A
The carbon ranges shown in the column headed Range apply when the
material specification, and this general specification shall
specified maximum limit for manganese does not exceed 1.00 %. When the
govern in the sequence stated.
maximum manganese limit exceeds 1.00 %, add 0.01 to the carbon ranges shown
4.2 Products covered by this specification are produced to above.
decimal thickness only, and decimal thickness tolerances apply.
6.1.3.1 Any additional elements specified shall be included
5. Materials and Manufacture
in the report of heat analysis.
5.1 Melting Practice— The steel shall be made by either the
6.2 Heat (Formerly Ladle) Analysis:
open-hearth, basic-oxygen, or electric-furnace process. It is
6.2.1 An analysis of each heat of steel shall be made by the
normally produced as a fully killed steel. Elements such as
manufacturer to determine the percentage of elements specified
aluminum may be added in sufficient amounts to control the
or restricted by the applicable specification.
austenitic grain size.
6.2.2 When requested, heat analysis for elements listed or
5.2 Cold Working Procedure:
required shall be reported to the purchaser or to his represen-
5.2.1 Prior to cold rolling, the hot-rolled strip shall be
tative. Aluminum content shall be reported.
descaled by chemical or mechanical means.
6.3 Product Analysis (Formerly Check Analysis)—Product
5.2.2 The strip shall be cold rolled by reducing to thickness
analysis is the chemical analysis of the semi-finished product
at room temperature (that is, below the recrystallization tem-
form. The strip may be subjected to product analysis by the
perature).
purchaser either for the purpose of verifying that the chemical
composition is within specified limits for each element, includ-
6. Chemical Composition
ing applicable tolerance for product analysis, or to determine
6.1 Limits:
variations in compositions within a cast or heat. The results of
6.1.1 When carbon steel strip is specified to chemical
analyses taken from different pieces within a heat may differ
composition, the compositions are commonly prepared using
from each other and from the cast analysis. The chemical
the ranges and limits shown in Table 1. The elements compris-
composition thus determined shall not vary from the limits
ing the desired chemical composition are specified in one of
specified by more than the amounts shown in Table 3, but the
three ways:
several determinations of any element in any cast may not vary
6.1.1.1 By a maximum limit,
both above and below the specified range.
6.1.1.2 By a minimum limit, or
6.4 Methods of Analysis—Test Methods, Practices, and
6.1.1.3 By minimum and maximum limits, termed the
Terminology A 751 shall be used for referee purposes.
“range.” By common usage, the range is the arithmetical
difference between the two limits (for example, 0.60 to 0.71 is
7. Metallurgical Structure
0.11 range).
7.1 Grain Size:
6.1.2 Steel grade numbers indicating chemical composition
7.1.1 Unless otherwise specified, the steel strip shall be
commonly produced to this specification are shown in Table 2
manfactured to a fine grain (austenitic and ferritic) practice.
and may be used.
7.2 Decarburization:
6.1.3 Additional elements may be present. Limits on such
7.2.1 When specified, the steel strip shall have a maximum
elements are by agreement between purchaser and supplier.
permissible depth of complete plus partial decarburization of
0.001 in. or 1.5 % of the thickness of the strip, whichever is
8 greater, except that strip less than 0.011 in. thick shall show no
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
Warrendale, PA 15096. complete decarburization.
A 682/A 682M
TABLE 2 Heat (Formerly Ladle) Analysis Chemical Composition, %
Steel Phosphorus, Sulfur,
A B
UNS Designation Carbon Manganese Silicon
Grade max max
G10300 1030 0.27 to 0.34 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10350 1035 0.31 to 0.38 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10400 1040 0.36 to 0.44 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10450 1045 0.42 to 0.50 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10500 1050 0.47 to 0.55 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10550 1055 0.52 to 0.60 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10600 1060 0.55 to 0.66 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10640 1064 0.59 to 0.70 0.50 to 0.80 0.035 0.040 0.15 to 0.30
G10650 1065 0.59 to 0.70 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10700 1070 0.65 to 0.76 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10740 1074 0.69 to 0.80 0.50 to 0.80 0.035 0.040 0.15 to 0.30
G10800 1080 0.74 to 0.88 0.60 to 0.90 0.035 0.040 0.15 to 0.30
G10850 1085 0.80 to 0.94 0.70 to 1.00 0.035 0.040 0.15 to 0.30
G10860 1086 0.80 to 0.94 0.30 to 0.50 0.035 0.040 0.15 to 0.30
G10950 1095 0.90 to 1.04 0.30 to 0.50 0.035 0.040 0.15 to 0.30
A
New designation established in accordance with Practice E 527 and SAE J1086, Recommended Practice for Numbering Metals and Alloys (UNS).
B
When agreed by purchaser and supplier, other silicon ranges are permissable.
TABLE 3 Permissible Variations from Specified Cast or Heat TABLE 4 Thickness Tolerances of Cold-Rolled Carbon Steel
A,B,C
(Formerly Ladle) Analysis Ranges and Limits Strip
Variations Over Max Limit or Under Inch-Pound Units (in.)
Limit or Max of
Min Limit
Element
Thickness Tolerances (Plus or Minus, in.)
Specification, %
Under Min Limit Over Max Limit
Nominal Over ⁄2
Carbon over 0.25 to 0.40, incl 0.03 0.04 Gage to less than 12 to less
over 0.40 to 0.80, incl 0.03 0.05 (in.) 12 wide than 18 18 to 23 ⁄16
over 0.80 0.03 0.06
0.251-0.300 0.0030 0.0035 0.0040
Manganese to 0.60, incl 0.03 0.03
0.160-0.250 0.0025 0.0032 0.0036
over 0.60 to 1.15, incl 0.04 0.04
0.125-0.1599 0.0022 0.0028 0.0032
over 1.15 to 1.65, incl 0.05 0.05
0.070-0.1249 0.0018 0.0022 0.0028
Phosphorus . . . . . . 0.01
0.040-0.0699 0.0014 0.0018 0.0024
Sulfur . . . . . . 0.01
0.030-0.0399 0.0012 0.0015 0.0020
Silicon to 0.30,incl 0.02 0.03
0.020-0.0299 0.0010 0.0013 0.0015
over 0.30 to 0.60 0.05 0.05
0.015-0.0199 0.0008 0.0010 0.0012
0.010-0.0149 0.0005 0.0008 0.0010
<0.010 0.0003 0.0006 0.0008
8. Mechanical Requirements
SI Units (mm)
8.1 The mechanical property requirements, number of
Thickness Tolerances (Plus or Minus, mm)
specimens, and test locations and specimen orientation shall be
Nominal Over 12.7 to
Gage less than 300 to less
in accordance with the applicable product specification.
(mm) 300 than 450 450 to 600
8.2 Unless otherwise specified in the applicable product
6.40-7.50 0.080 0.090 0.100
specification, test specimens must be prepared in accordance
4.00-6.39 0.065 0.080 0.090
with Test Methods and Definitions A 370.
3.20-3.99 0.055 0.070 0.080
8.3 Mechanical tests shall be conducted in accordance with
1.80-3.19 0.045 0.055 0.070
1.00-1.79 0.035 0.045 0.060
Test Methods and Definitions A 370.
0.75-0.99 0.030 0.030 0.050
0.50-0.74 0.025 0.035 0.040
9. Dimensions, Mass, and Permissible Variations
0.38-0.49 0.020 0.025 0.030
0.25-0.37 0.013 0.020 0.025
9.1 The thickness, width, camber, and length tolerances
<0.25 0.007 0.015 0.020
shall conform to the requirements specified in Tables 4-9.
A
Measured ⁄8 in. or more in from edge; and on narrower than 1 in., at any place
9.2 Flatness—It is not practical to formulate flatness toler-
between edges.
B
ances for cold-rolled carbon spring steel strip to represent the
Measured 10 mm or more in from edge; and on narrower than 25 mm, at any
place between edges.
range of widths and thicknesses in coils and cut lengths.
C
Number 3 edge strip with thickness tolerance guaranteed at less than ⁄8 in.
(10 mm) from the slit edge, is available by agreement between consumer and strip
10. Finish and Edges
manufacturer.
10.1 Surface—The surface requirements shall be as speci-
fied in the product specifications. rolling from the hot-rolled strip without additional processing
10.2 Edges—Cold-rolled carbon spring steel strip shall be of the edge.
supplied with one of the following edges as specified: 10.2.3 No. 3—An approximately square edge produced by
10.2.1 No. 1—A prepared edge of a specified contour slitting on which the burr is not eliminated. This is produced
(round or square) that is produced when a very accurate width when the edge condition is not a critical requirement for the
is required or when an edge condition suitable for electroplat- finished part. Normal coiling or piling does not provide a
ing is required, or both. definite positioning of the slitting burr.
10.
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