ASTM B671-81(2005)

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 E 29.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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 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-Apr-2005
• 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(1999)e1 - Standard Specification for Refined Iridium
• Effective Date: 01-May-2005
• Replaced By: ASTM B671-81(2010) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2005)
Standard Specification for
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 of 99.80 %. TABLE 1 Chemical Requirements
1.1.2 Grade 99.90— Iridium having a purity of 99.90 %.
Composition, %
A
Element
Grade 99.80 Grade 99.90
NOTE 1—For the purposes of determining conformance with this
(UNS PO6100)
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 Iridium, min (by difference) 99.80 99.90
Rhodium, max 0.15 0.05
the limiting value, in accordance with the rounding method of Practice
Platinum, max 0.10 0.05
E29.
Palladium, max 0.05 0.05
Ruthenium, max 0.05 0.05
1.2 The values stated in inch-pound units are to be regarded
Lead, max 0.02 0.015
as the standard. The values given in parentheses are for
Silicon, max 0.02 0.01
information only.
Tin, max 0.01 0.01
Zinc, max 0.01 0.01
1.3 This standard does not purport to address all of the
Arsenic, max 0.01 0.005
safety concerns, if any, associated with its use. It is the
Bismuth, max 0.01 0.005
responsibility of the user of this standard to become familiar
Cadmium, max 0.01 0.005
Iron, max 0.01 0.01
with all hazards including those identified in the appropriate
Silver, max — 0.02
Material Safety Data Sheet for this product/material as pro-
Gold, max — 0.02
vided by the manufacturer, to establish appropriate safety and
Copper, max — 0.02
Nickel, max — 0.02
health practices, and determine the applicability of regulatory
Chromium, max — 0.02
limitations prior to use.
A
By agreement between manufacturer and purchaser, analyses may be
required and limits established for elements or compounds not specified in this
2. Referenced Documents
table.
2.1 ASTM Standards:
E29 Practice for Using Significant Digits in Test Data to
5. Sampling
Determine Conformance with Specifications
5.1 The value of this material is such that special attention
must be paid to sampling procedures. The purchaser and
3. Materials and Manufacture
manufacturer shall agree upon sampling procedures used.
3.1 The metal may be produced by any refining process that
5.2 Sampling lots shall consist of the following:
yields a product capable of meeting the chemical requirements
5.2.1 Sponge—A single refining lot.
of this specification. The purchaser, upon request, shall be
5.2.2 Powder—A single refining lot.
informed of the refining process used.
6. Method of Analysis
This specification is under the jurisdiction of ASTM Committee B02 on
6.1 Pending the development of standardASTM methods of
Nonferrous Metals a
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