ASTM B561-94(2005)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:B561 −94(Reapproved2005)
Standard Specification for
Refined Platinum
This standard is issued under the fixed designation B561; 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.
1. Scope of this specification. The purchaser, upon request, shall be
informed of the refining process used.
1.1 This specification covers refined platinum as sponge,
cast bar, and wrought forms (Note 1) in two grades as follows:
3.2 The surfaces of bars and wrought forms shall exhibit
1.1.1 Grade 99.95 (UNS PO4995)— Platinum having a
quality generally acceptable to the trade.
purity of 99.95 %, min, and
1.1.2 Grade 99.99— Platinum having a purity of 99.99 %
4. Chemical Composition
min.
4.1 The refined platinum shall conform to the chemical
NOTE 1—Other forms of unfabricated platinum of commerce are not to
composition prescribed in Table 1.
be excluded under this specification.
NOTE 2—For the purposes of determining conformance with this
5. Sampling
specification, an observed value obtained from analysis shall be rounded
to the nearest unit in the last right hand place of figures used in expressing
5.1 The value of this material is such that special attention
the limiting value, in accordance with the rounding off method of Practice
must be paid to sampling procedures. The purchaser and
E29.
manufacturer shall agree upon the sampling procedures used.
1.2 The values stated in inch-pound units are to be regarded
as the standard. SI units are provided for information only.
5.2 Lot Size—Sampling lots shall consist of the following:
1.3 This standard does not purport to address all of the 5.2.1 Sponge—A single refining lot, and
safety concerns, if any, associated with its use. It is the
5.2.2 Other Forms— A single melt or primary consolida-
responsibility of the user of this standard to become familiar
tion.
with all hazards including those identified in the appropriate
Material Safety Data Sheet for this product/material as pro-
6. Methods of Analysis
vided by the manufacturer, to establish appropriate safety and
6.1 Pending the development of standardASTM methods of
health practices, and determine the applicability of regulatory
chemical or spectrographic analysis, or both, the methods to be
limitations prior to use.
used shall be a matter of agreement between the manufacturer
and the purchaser.
2. Referenced Documents
2.1 ASTM Standards:
7. Rejection and Rehearing
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
7.1 Material that fails to conform to the requirements of this
specification may be rejected. Rejection should be reported to
3. Materials and Manufacture the producer or supplier promptly and in writing. In case of
dissatisfaction with the results of the test, the producer or
3.1 The metal may be produced by any refining process that
supplier may make claim for rehearing.
yields a product capable of meeting the chemical requirements
7.1.1 If the platinum satisfies the requirements of this
specification, it shall not be rejected for defects in the products
in which it is used.
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
7.2 Investigation of Claims—In a que
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