ASTM E1938 - 13(2018)

    Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Spectrophotometry

    Active Standard ASTM E1938 | Developed by Subcommittee: E01.08

    Book of Standards Volume: 03.05


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    Significance and Use

    5.1 This test method is used for the determination of titanium in nickel alloy samples by molecular absorption spectrometry to check compliance with compositional specifications. It is assumed that all who use the procedure will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that the work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed such as those described in Guide E882.

    1. Scope

    1.1 This test method covers the determination of titanium in nickel alloys in the range 0.3 % to 5.0 %. With appropriate reference materials, the test method may be extended down to 0.05 %.

    1.2 Molybdenum, if present, may cause a high bias to the extent of 0.001 % titanium for every 1 % molybdenum.

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards associated with the use of this test method, see Practices E50.

    1.5 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

    E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

    E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory

    E1601 Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method


    ICS Code

    ICS Number Code 77.120.40 (Nickel, chromium and their alloys)

    UNSPSC Code

    UNSPSC Code 11101706(Nickel); 41115403(Spectrometers)


    Referencing This Standard
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    DOI: 10.1520/E1938-13R18

    Citation Format

    ASTM E1938-13(2018), Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Spectrophotometry, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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