ASTM E1938 - 13

    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 and health 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.


    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

    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

    ISO Standards

    ISO 11433:1993(E) Nickel Alloys--Determination of Titanium Content--Diantipyrylmethane Molecular Absorption Spectrometric Method

    ISO 5725:1986 Precision of Test Methods--Determination of Repeatability and Reproducibility for a Standard Test Method by Inter-Laboratory Tests


    ICS Code

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

    UNSPSC Code

    UNSPSC Code 11101706(Nickel); 41115403(Spectrometers)


    Referencing This Standard

    DOI: 10.1520/E1938

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM E1938-13, Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Spectrophotometry, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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