ASTM B683-01(2012)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:B683 −01 (Reapproved 2012)
Standard Specification for
Pure Palladium Electrical Contact Material
This standard is issued under the fixed designation B683; 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 Department of Defense.
NOTE 1—The chemical requirements for unfabricated palladium (re-
1. Scope
fined material) are covered in Specification B589.
1.1 This specification covers palladium in the form of rod,
4.2 By agreement between the purchaser and the
wire, strip, and sheet material for electrical contacts.
manufacturer, analysis may be required and limits established
1.2 The values stated in inch-pound units are to be regarded
for elements or compounds not specified in the table of
as standard. The values given in parentheses are mathematical
chemical composition.
conversions to SI units that are provided for information only
5. Mechanical Requirements
and are not considered standard.
5.1 The contract or order may specify ultimate tensile
1.3 This standard does not purport to address all of the
strength, elongation, microhardness (Knoop or Vickers), hard-
safety concerns, if any, associated with its use. It is the
ness (Rockwell or Rockwell Superficial), or a combination of
responsibility of the user of this standard to become familiar
these mechanical properties as temper criterion. If the contract
with all hazards including those identified in the appropriate
or order does not specify a temper criterion, then the criterion
Material Safety Data Sheet (MSDS) for this product/material
for temper designation will be ultimate tensile strength and
as provided by the manufacturer, to establish appropriate
elongation.
safety and health practices, and determine the applicability of
regulatory limitations prior to use.
5.2 Mechanical properties shall conform to the listings of
Table 2.
2. Referenced Documents
5.3 Since it is not always possible to tension test some parts
2.1 ASTM Standards:
and shapes, the user and supplier should reach an agreement
B476 Specification for General Requirements for Wrought
with respect to the type of hardness tests and the acceptable
Precious Metal Electrical Contact Materials
range that should be applicable. See Table 3 for typical
B589 Specification for Refined Palladium
hardness values.
3. Manufacture
5.4 All test specimens shall be full size when practical.
3.1 Raw materials shall be of such quality and purity that
5.5 All tests shall be conducted at room temperature, 65 to
the finished product will have the properties and characteristics
85°F (18 to 29°C).
prescribed in this specification.
6. General Requirements
3.2 The material shall be finished by such operations (cold
working, annealing, turning, grinding, or pickling) as are
6.1 The provisions of Specification B476 shall apply to all
required to produce the prescribed properties. materials produced to this specification.
4. Chemical Composition
7. Inspection and Testing
4.1 Materialproducedunderthisspecificationshallmeetthe
7.1 Material furnished under this specification shall be
requirements of chemical composition prescribed in Table 1.
inspected by the manufacturer as listed below:
7.1.1 Visual inspection in accordance with the Inspection
This specification is under the jurisdiction of ASTM Committee B02 on
section in Specification B476.
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
7.1.2 Temper test (hardness or tension, but not both). A
B02.05 on Precious Metals and Electrical Contact Material
...