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This specification covers requirements for refined indium as ingot in six grades, namely: Grade 99.9 or 3N grade (indium with a purity of 99.90%); Grade 99.99 or 4N grade (indium with a purity of 99.99%); Grade 99.995 or 4N5 grade (indium with a purity of 99.995%); Grade 99.999 or 5N grade (indium with a purity of 99.999%); Grade 99.9999 or 6N grade (indium with a purity of 99.9999%); and Grade 99.99995 or 6N5 grade (indium with a purity of 99.99995%). Indium metal from ingot can be fabricated into shot, spheres, wire, sheet, foil, tubing, and other customized fabrications with purities up to and including Grade 99.999. Grades 99.9999 and 99.99995 are available in ingot form only.
This specification specifies the requirements for the manufacturing process; sampling; product marking; and maximum total metallic impurities for indium grades.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers refined indium as ingot in six grades as follows:
1.1.1 Grade 99.9—Indium having a purity of 99.90 %, also known as 3N grade,
1.1.2 Grade 99.99—Indium having a purity of 99.99 %, also known as 4N grade,
1.1.3 Grade 99.995—Indium having a purity of 99.995 %, also known as 4N5 grade,
1.1.4 Grade 99.999—Indium having a purity of 99.999 %, also known as 5N grade,
1.1.5 Grade 99.9999—Indium having a purity of 99.9999 %, also known as 6N grade, and
1.1.6 Grade 99.99995—Indium having a purity of 99.99995 %, also known as 6N5 grade.
1.2 Indium metal from ingot can be fabricated into shot, spheres, wire, sheet, foil, tubing, and other customized fabrications with purities up to and including Grade 99.999. Grades 99.9999 and 99.99995 are available in ingot form only.
1.3 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.
1.4 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 and health practices, and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)
UNSPSC Code 30266215(Indium ingot)
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ASTM B1002-16, Standard Specification for Refined Indium, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top