ASTM E1938-13 PDF

Scope: 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.

1.1 This test method covers the determination of titanium in nickel alloys in the range 0.38201;% to 5.08201;%. With appropriate reference materials, the test method may be extended down to 0.058201;%.

1.2 Molybdenum, if present, may cause a high bias to the extent of 0.0018201;% titanium for every 18201;% 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.

ASTM E1938-13 Referenced Document

ASTM E135 Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
ASTM E1601 Standard Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
ASTM E50 Standard Practice for Apparatus, Reagents, and safety Precautions for Chemical Analysis of Metals
ASTM E882 Standard Guide for Accountability and Quality Control in the Chemical Analysis Laboratory

2018 ASTM E1938-13(2018) Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Spectrophotometry
2013 ASTM E1938-13 Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Spectrophotometry
2008 ASTM E1938-08 Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Molecular Absorption Spectrometry
2002 ASTM E1938-02 Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Molecular Absorption Spectrometric Method
1997 ASTM E1938-97 Standard Test Method for Determination of Titanium in Nickel Alloys by Diantipyrylmethane Molecular Absorption Spectrometric Method