ASTM B563-01(2022)

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:B563 −01 (Reapproved 2022)
Standard Specification for
Palladium-Silver-Copper Electrical Contact Alloy
This standard is issued under the fixed designation B563; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 3. Materials and Manufacture
1.1 This specification covers an alloy containing palladium, 3.1 Raw materials shall be of such quality and purity that
silver, copper, platinum, and nickel in the form of wire, rod, thefinishedproductwillhavethepropertiesandcharacteristics
and strip for electrical contacts. prescribed in this specification.
1.2 The values stated in inch-pound units are to be regarded 3.2 The material shall be finished by such operations (cold
as standard. The values given in parentheses are mathematical working, heat treating, annealing, turning, grinding, pickling)
conversions to SI units that are provided for information only and are required to produce the prescribed properties.
and are not considered standard.
4. Chemical Composition
1.3 The following precautionary statement pertains to the
4.1 Materialproducedunderthisspecificationshallmeetthe
test method portion only, Section 7, of this specification: This
requirements of chemical composition shown in Table 1.
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user
5. Mechanical Properties
of this standard to become familiar with all hazards including
5.1 The contract or order may specify ultimate tensile
those identified in the appropriate Safety Data Sheet (SDS) for
strength, elongation, microhardness (Knoop or Vickers), hard-
this product/material as provided by the manufacturer, to
ness (Rockwell or Rockwell Superficial), or a combination of
establish appropriate safety, health, and environmental
these mechanical properties as temper criterion. If the contract
practices, and determine the applicability of regulatory limi-
or order does not specify a temper criterion, then the criterion
tations prior to use.
for temper designation will be ultimate tensile strength and
1.4 This international standard was developed in accor-
elongation.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5.2 The material shall conform to the mechanical properties
Development of International Standards, Guides and Recom-
shown in Table 2, Table 3,or Table 4.
mendations issued by the World Trade Organization Technical
6. General Requirements
Barriers to Trade (TBT) Committee.
6.1 Specification B476 shall apply to all materials produced
2. Referenced Documents
to this specification.
2.1 ASTM Standards:
B476Specification for General Requirements for Wrought
7. Test Methods
Precious Metal Electrical Contact Materials
7.1 TestmethodsareinaccordancewithSpecificationB476.
E8/E8MTest Methods for Tension Testing of Metallic Ma-
7.2 All tension tests are in accordance with Test Methods
terials
E8/E8Mandtensilespecimensarefullcross-sectionsizewhen
E384Test Method for Microindentation Hardness of Mate-
practical. Elongation measurements should be based ona2in.
rials
(50 mm) gauge length.
This specification is under the jurisdiction of ASTM Committee B02 on
7.3 Hardness is in accordance with Test Method E384. Test
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
material0.005in.(0.13mm)inthickness(diameter)andlarger
B02.05 on Precious Metals and Electrical Contact Materials.
using a 100 g indenter load.Test material less than 0.005 in. in
Current edition approved April 1, 2022. Published April 2022. Originally
thickness (diameter) using a 50 g indenter load. Make a
approved in 1972. Last previous edition approved in 2017 as B563–01(2017).
DOI: 10.1520/B0563-01R22.
minimum of five hardness indentations on each specimen.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Make all indentations so that the long axis of the Knoop
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
indenter is parallel to the rolling or drawing direction of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. material.
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