ASTM B103/B103M-23
(Specification)Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
ABSTRACT
This specification covers plate, rolled bar, sheet, and strip of copper-tin alloy (phosphor bronze plate), copper-tin-lead alloy (leaded phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze). Copper alloys covered include UNS Nos. C51000, C51100, C51180, C51900, C52100, C52180, C52400, C53400, and C54400. Product shall be manufactured by hot or cold working, rolling, and annealing. Chemical composition of the materials shall conform to UNS designation of the material. Product shall conform to chemical analysis, tensile strength and Rockwell hardness tests specified in the specification. Chemical composition testing shall be performed for each element, namely, copper, iron, lead, phosphorus, tin, and zinc. Tension test shall be made so that the longitudinal axis of the specimen is parallel to direction of rolling.
SCOPE
1.1 This specification covers the requirements for copper-tin alloy (phosphor bronze), copper-tin-lead alloy (leaded phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze), plate, sheet, strip, and rolled bar for general application produced from Copper Alloy UNS Nos. C51000, C51100, C51180, C51900, C52100, C52180, C52400, C53400, and C54400. The phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings, bearings, and load-bearing thrust washers.
Note 1: All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties.
1.2 Units—The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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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Standards Content (Sample)
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: B103/B103M − 23
Standard Specification for
1
Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
This standard is issued under the fixed designation B103/B103M; 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* mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers the requirements for copper-tin
alloy (phosphor bronze), copper-tin-lead alloy (leaded phos-
2. Referenced Documents
phor bronze), and copper-tin-lead-zinc alloy (bearing bronze),
2
2.1 ASTM Standards:
plate, sheet, strip, and rolled bar for general application
B248 Specification for General Requirements for Wrought
produced from Copper Alloy UNS Nos. C51000, C51100,
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
C51180, C51900, C52100, C52180, C52400, C53400, and
Bar
C54400. The phosphor bronzes commonly are used for deep
B248M Specification for General Requirements for Wrought
drawing into bellows and stamping and forming into spring
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
devices and into terminals and connectors for electrical appa-
Bar (Metric)
ratus because they combine high strength with high elongation.
B601 Classification for Temper Designations for Copper and
The leaded phosphor bronzes are used where strength, corro-
Copper Alloys—Wrought and Cast
sion resistance, and machinability are required. The bearing
B846 Terminology for Copper and Copper Alloys
bronze is used in bushings, bearings, and load-bearing thrust
B950 Guide for Editorial Procedures and Form of Product
washers.
Specifications for Copper and Copper Alloys
NOTE 1—All of the above alloys contain small amounts of phosphorus,
E8/E8M Test Methods for Tension Testing of Metallic Ma-
used as a deoxidant in melting, and to enhance the mechanical properties.
terials
1.2 Units—The values stated in either inch-pound units or
E62 Test Methods for Chemical Analysis of Copper and
3
SI units are to be regarded separately as standard. Within the
Copper Alloys (Photometric Methods) (Withdrawn 2010)
text, SI units are shown in brackets. The values stated in each
E75 Test Methods for Chemical Analysis of Copper-Nickel
system are not necessarily exact equivalents; therefore, each 3
and Copper-Nickel-Zinc Alloys (Withdrawn 2010)
system shall be used independently of the other. Combining
E255 Practice for Sampling Copper and Copper Alloys for
values from the two systems may result in non-conformance
the Determination of Chemical Composition
with the standard.
E478 Test Methods for Chemical Analysis of Copper Alloys
1.3 The following safety hazard caveat pertains only to the
3. General Requirements
test method(s) described in this specification. This standard
does not purport to address all of the safety concerns, if any,
3.1 The following sections of Specifications B248 and
associated with its use. It is the responsibility of the user of this
B248M constitute a part of this specification:
standard to establish appropriate safety, health, and environ-
3.1.1 Terminology
mental practices and determine the applicability of regulatory
3.1.2 Materials and Manufacture
limitations prior to use.
3.1.3 Workmanship, Finish, and Appearance
1.4 This international standard was developed in accor-
3.1.4 Sampling, Except for Chemical Analysis
dance with internationally recognized principles on standard-
3.1.5 Number of Tests and Retests
ization established in the Decision on Principles for the
3.1.6 Specimen Preparation
Development of International Standards, Guides and Recom-
3.1.7 Test Methods, Except for Chemical Analysis
1 2
This specification is under the jurisdiction of ASTM Committee B05 on Copper For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Sheet, and Strip. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2023. Published October 2023. Originally the ASTM website.
3
approved in 1936. Last previous edition approved in 2019 as B103/B103M – 19. The last approved version of this historical standard is referenced on
DOI: 10.1520/B0103_B0103M-23. www.astm.org.
*A Summary of Changes section appears at the end o
...
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: B103/B103M − 19 B103/B103M − 23
Standard Specification for
1
Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
This standard is issued under the fixed designation B103/B103M; 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 establishescovers the requirements for copper-tin alloy (phosphor bronze), copper-tin-lead alloy (leaded
phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze), plate, sheet, strip, and rolled bar. bar for general application
produced from Copper Alloy UNS Nos. C51000, C51100, C51180, C51900, C52100, C52180, C52400, C53400, and C54400. The
phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into
terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor
bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings,
bearings, and load-bearing thrust washers. The following alloys are covered:
Copper Alloy Nominal Composition, % Previously Used
2
UNS No. Copper Tin Zinc Lead Designation
C51000 95 5 . . . . . . A1
C51100 96 4 . . . . . . A
C51180 96 4 . . . . . . . . .
C51900 94 6 . . . . . .
A
C52100 92 8 . . . . . . C
C52180 92 8 . . . . . . . . .
C52400 90 10 . . . . . . D
C53400 94 5 . . . 1 B1
C54400 88 4 3 4 B2
A
SAE Specification CA 521 conforms to the requirements of UNS No. C52100.
NOTE 1—All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties.
1.2 Units—The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI
units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure
conformance with the standard, each system shall be used independently of the other, andother. Combining values from the two
systems shall not be combined.may result in non-conformance with the standard.
1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification.
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, 2019Oct. 1, 2023. Published October 2019October 2023. Originally approved in 1936. Last previous edition approved in 20152019 as
B103/B103MB103/B103M – 19.–15. DOI: 10.1520/B0103_B0103M–19.10.1520/B0103_B0103M-23.
*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
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B103/B103M − 23
1.3.1 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification. This standard does
not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard
to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior
to use.
1.4 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
2.1 ASTM Standards:
B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B248M Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
(Metric)
B601 Classification for Temper Desi
...
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