ASTM B248M-22
(Specification)Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)
Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)
ABSTRACT
This specification establishes the general requirements common to several wrought products including copper and copper-alloy plates, sheets, strips, and rolled bars. The numerical values in this specification are not presented in inch-pound units, but rather, in metric or SI units only. The material for manufacture shall be a cast bar, cake, or slab of such purity and soundness as to be suitable for processing by hot- or cold-working, and annealing to produce a uniform wrought structure in the finished product. The edges shall be slit, sheared, sawed, or rolled, as specified. When rolled edges are required, they may be produced by either rolling or drawing to one of the following specified edge contours: square edges (square corners), rounded corners, rounded edges, and full-rounded edges. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (thickness, length, width, weight, and straightness), mechanical (tensile and yield strength, Rockwell hardness, and elongation), electrical (resistivity and conductivity), chemical composition, and grain size requirements.
SIGNIFICANCE AND USE
11.1 For the purposes of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29:
Property
Rounded Unit for Observed or
Calculated Value
Chemical composition
nearest unit in the last
Hardness
right-hand significant digit
Electrical resistivity
used in expressing
Electrical conductivity
the limiting value
Tensile strength
nearest 5 MPa
Yield strength
nearest 5 MPa
Elongation:
nearest 1 %
Grain size:
Under 0.060 mm
nearest multiple of 0.005 mm
0.060 mm and over
nearest 0.01 mm
SCOPE
1.1 This specification establishes the general requirements common to several wrought product specifications. Unless otherwise specified in the purchase order or in an individual specification, these general requirements shall apply to copper and copper-alloy plate, sheet, strip, and rolled bar supplied under each of the following product specifications issued by ASTM: B36/B36M, B96/B96M, B103/B103M, B121/B121M, B122/B122M, B130, B152/B152M, B169/B169M, B422/B422M, B534, B694, B888/B888M, and B936.2
1.2 Units—This specification is the companion specification to inch-pound Specification B248.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B248M −22
Standard Specification for
General Requirements for Wrought Copper and Copper-
1
Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)
This standard is issued under the fixed designation B248M; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* Sheet, Strip, and Rolled Bar for General Purposes and
Pressure Vessels
1.1 This specification establishes the general requirements
B103/B103M Specification for Phosphor Bronze Plate,
common to several wrought product specifications. Unless
Sheet, Strip, and Rolled Bar
otherwise specified in the purchase order or in an individual
B121/B121M Specification for Leaded Brass Plate, Sheet,
specification, these general requirements shall apply to copper
Strip, and Rolled Bar
and copper-alloy plate, sheet, strip, and rolled bar supplied
B122/B122M Specification for Copper-Nickel-Tin Alloy,
under each of the following product specifications issued by
ASTM: B36/B36M, B96/B96M, B103/B103M, B121/B121M, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-
B122/B122M, B130, B152/B152M, B169/B169M, B422/ Nickel Alloy Plate, Sheet, Strip, and Rolled Bar
2
B422M, B534, B694, B888/B888M, and B936.
B130 Specification for Commercial Bronze Strip for Bullet
Jackets
1.2 Units—This specification is the companion specification
B152/B152M Specification for Copper Sheet, Strip, Plate,
to inch-pound Specification B248.
and Rolled Bar
1.3 This international standard was developed in accor-
B169/B169M Specification for Aluminum Bronze Sheet,
dance with internationally recognized principles on standard-
Strip, and Rolled Bar
ization established in the Decision on Principles for the
B193 Test Method for Resistivity of Electrical Conductor
Development of International Standards, Guides and Recom-
Materials
mendations issued by the World Trade Organization Technical
B248 Specification for General Requirements for Wrought
Barriers to Trade (TBT) Committee.
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
Bar
2. Referenced Documents
B422/B422M Specification for Copper-Aluminum-Silicon-
2.1 The following documents of the issue in effect on date
Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy,
of material purchase form a part of this specification to the
Copper-Nickel-Silicon Alloy, Copper-Nickel-Aluminum-
extent referenced herein:
Magnesium Alloy, and Copper-Nickel-Tin Alloy Sheet
3
2.2 ASTM Standards:
and Strip
B36/B36M Specification for Brass Plate, Sheet, Strip, And
B534 Specification for Copper-Cobalt-Beryllium Alloy and
Rolled Bar
Copper-Nickel-Beryllium Alloy Plate, Sheet, Strip, and
B96/B96M Specification for Copper-Silicon Alloy Plate,
Rolled Bar
B694 Specification for Copper, Copper-Alloy, Copper-Clad
1 Bronze (CCB), Copper-Clad Stainless Steel (CCS), and
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
andCopperAlloysandisthedirectresponsibilityofSubcommitteeB05.01onPlate,
Copper-Clad Alloy Steel (CAS) Sheet and Strip for
Sheet, and Strip.
Electrical Cable Shielding
Current edition approved May 1, 2022. Published May 2022. Originally
B820 Test Method for Bend Test for Determining the Form-
approved in 1980. Last previous edition approved in 2017 as B248M – 17. DOI:
10.1520/B0248M-22.
ability of Copper and Copper Alloy Strip
2
The UNS system for copper and copper alloys (see Practice E527) is a simple
B846 Terminology for Copper and Copper Alloys
expansion of the former standard designation system accomplished by the addition
B888/B888M Specification for Copper Alloy Strip for Use
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate
composition variations of the base alloy.
in Manufacture of Electrical Connectors or Spring Con-
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tacts
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
B936 Specification for Copper-Chromium-Iron-Titanium
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Alloy Plate, Sheet, Strip and Rolled Bar
*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
1
---------------------- Page: 1 ----------------------
B248M−22
E8/E8M Test Methods for Tension Testing of Metallic Ma- 4.1.2 When specified in the co
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B248M − 17 B248M − 22
Standard Specification for
General Requirements for Wrought Copper and Copper-
1
Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)
This standard is issued under the fixed designation B248M; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishes the general requirements common to several wrought product specifications. Unless otherwise
specified in the purchase order or in an individual specification, these general requirements shall apply to copper and copper-alloy
plate, sheet, strip, and rolled bar supplied under each of the following product specifications issued by ASTM: B19, B36/B36M,
B96/B96M, B103/B103M, B121/B121M, B122/B122M, B130, B152/B152M, B169/B169M, B194, B422/B422M, B465, B534,
2
B591, B592, B694, B740, B747, B768, B888/B888M, and B936.
1.2 Units—This specification is the companion specification to inch-pound Specification B248.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein:
3
2.2 ASTM Standards:
B19 Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and Disks
B36/B36M Specification for Brass Plate, Sheet, Strip, And Rolled Bar
B96/B96M Specification for Copper-Silicon Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure Vessels
B103/B103M Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
B121/B121M Specification for Leaded Brass Plate, Sheet, Strip, and Rolled Bar
B122/B122M Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy
Plate, Sheet, Strip, and Rolled Bar
B130 Specification for Commercial Bronze Strip for Bullet Jackets
B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,
Sheet, and Strip.
Current edition approved Oct. 1, 2017May 1, 2022. Published November 2017May 2022. Originally approved in 1980. Last previous edition approved in 20122017 as
B248M – 12.B248M – 17. DOI: 10.1520/B0248M-17.10.1520/B0248M-22.
2
The UNS system for copper and copper alloys (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition of a
prefix “C” and a suffix “00.” The suffix can be used to accommodate composition variations of the base alloy.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 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 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B248M − 22
B169/B169M Specification for Aluminum Bronze Sheet, Strip, and Rolled Bar
B193 Test Method for Resistivity of Electrical Conductor Materials
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B422/B422M Specification for Copper-Aluminum-Silicon-Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy, Copper-
Nickel-Silicon Alloy, Copper-Nickel-Aluminum-Magnesium Alloy, and Copper-Nickel-Tin Alloy Sheet and Strip
B465 Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar
B534 Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B591 Specification for Copper-Zinc-Tin and Copper-Zinc-Tin-Iron-Nickel Alloys Plate, Sheet, Strip, and Rolled Bar
B592 Specification for Cop
...
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