ASTM B671-81(2021)
(Specification)Standard Specification for Refined Iridium
Standard Specification for Refined Iridium
ABSTRACT
This specification covers refined iridium as sponge and powder in two grades, Grade 99.80 (UNS PO6100) and Grade 99.90. The metal may be produced by any refining process. They shall conform to the required chemical composition for iridium, rhodium, platinum, palladium, ruthenium, lead, silicon, tin, zinc, arsenic, bismuth, cadmium, iron, silver, gold, copper, nickel, and chromium. The sampling procedures shall consist of sponge lot and powder lot.
SCOPE
1.1 This specification covers refined iridium as sponge and powder in two grades as follows:
1.1.1 Grade 99.80 (UNS PO6100)—Iridium having a purity of 99.80 %.
1.1.2 Grade 99.90—Iridium having a purity of 99.90 %.
Note 1: For the purposes of determining conformance with this 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 the limiting value, in accordance with the rounding method of Practice E29.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, 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.
General Information
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: B671 −81 (Reapproved 2021)
Standard Specification for
1
Refined Iridium
This standard is issued under the fixed designation B671; 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 3. Materials and Manufacture
1.1 This specification covers refined iridium as sponge and
3.1 The metal may be produced by any refining process that
powder in two grades as follows:
yields a product capable of meeting the chemical requirements
1.1.1 Grade 99.80 (UNS PO6100)—Iridium having a purity
of this specification. The purchaser, upon request, shall be
of 99.80 %.
informed of the refining process used.
1.1.2 Grade 99.90—Iridium having a purity of 99.90 %.
4. Chemical Composition
NOTE 1—For the purposes of determining conformance with this
specification, an observed value obtained from analysis shall be rounded
4.1 The refined iridium shall conform to the chemical
to the nearest unit in the last right-hand place of figures used in expressing
composition prescribed in Table 1.
the limiting value, in accordance with the rounding method of Practice
E29.
5. Sampling
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
5.1 The value of this material is such that special attention
conversions to SI units that are provided for information only
must be paid to sampling procedures. The purchaser and
and are not considered standard.
manufacturer shall agree upon sampling procedures used.
1.3 This standard does not purport to address all of the
5.2 Sampling lots shall consist of the following:
safety concerns, if any, associated with its use. It is the
5.2.1 Sponge—A single refining lot.
responsibility of the user of this standard to become familiar
5.2.2 Powder—A single refining lot.
with all hazards including those identified in the appropriate
Safety Data Sheet (SDS) for this product/material as provided
6. Method of Analysis
by the manufacturer, to establish appropriate safety, health,
and environmental practices, and determine the applicability
6.1 Pending the development of standardASTM methods of
of regulatory limitations prior to use.
chemical or spectrographic analysis, or both, the methods to be
1.4 This international standard was developed in accor-
used shall be a matter of agreement between manufacturer and
dance with internationally recognized principles on standard-
the purchaser.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
7. Rejection and Rehearing
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
7.1 Material that fails to conform to the requirements of this
specification may be rejected. Rejection should be reported to
2. Referenced Documents
the producer or supplier promptly and in writing. In case of
2
dissatisfaction with the results of the test, the producer or
2.1 ASTM Standards:
supplier may make claim for rehearing.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
7.1.1 If the iridium satisfies the requirements of this
specification, it shall not be condemne
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