ASTM B671-81(2010)

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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Nov-2010
• ICS: 77.120.99 - Other non-ferrous metals and their alloys
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.05 - Precious Metals and Electrical Contact Materials and Test Methods

Relations

• Replaces: ASTM B671-81(2005) - Standard Specification for Refined Iridium
• Effective Date: 01-Dec-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B671 −81(Reapproved 2010)
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 4. Chemical Composition
1.1 This specification covers refined iridium as sponge and 4.1 The refined iridium shall conform to the chemical
powder in two grades as follows: composition prescribed in Table 1.
1.1.1 Grade 99.80 (UNS PO6100)—Iridium having a purity
5. Sampling
of 99.80 %.
1.1.2 Grade 99.90—Iridium having a purity of 99.90 %.
5.1 The value of this material is such that special attention
must be paid to sampling procedures. The purchaser and
NOTE 1—For the purposes of determining conformance with this
manufacturer shall agree upon sampling procedures used.
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
5.2 Sampling lots shall consist of the following:
the limiting value, in accordance with the rounding method of Practice
5.2.1 Sponge—A single refining lot.
E29.
5.2.2 Powder—A single refining lot.
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
6. Method of Analysis
conversions to SI units that are provided for information only
6.1 Pending the development of standardASTM methods of
and are not considered standard.
chemical or spectrographic analysis, or both, the methods to be
1.3 This standard does not purport to address all of the
used shall be a matter of agreement between manufacturer and
safety concerns, if any, associated with its use. It is the
the purchaser.
responsibility of the user of this standard to become familiar
7. Rejection and Rehearing
with all hazards including those identified in the appropriate
Material Safety Data Sheet (MSDS) for this product/material
7.1 Material that fails to conform to the requirements of this
as provided by the manufacturer, to establish appropriate
specification may be rejected. Rejection should be reported to
safety and health practices, and determine the applicability of
the producer or supplier promptly and in writing. In case of
regulatory limitations prior to use.
dissatisfaction with the results of the test, the producer or
supplier may make claim for rehearing.
2. Referenced Documents
7.1.1 If the iridium satisfies the requirements of this
2
2.1 ASTM Standards:
specification, it shall not be condemned for defects in the
E29 Practice for Using Significant Digits in Test Data to
products in which it is used.
Determine Conformance with Specifications
7.2 Investigation of Claims—In a question of chemical
composition, a new sample shall be drawn by representatives
3. Materials and Manufacture
of both parties in accordance with Section 5. The properly
3.1 The metal may be produced by any refining process that
mixed and quartered sample shall be divided into three parts,
yields a product capable of meeting the chemical requirements
each of which shall b
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