ASTM E2371-21a
Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)

Standard No.

ASTM E2371-21a

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E2371-21a

Scope

1.1 This method describes the analysis of titanium and titanium alloys, such as specified by committee B10, by inductively coupled plasma atomic emission spectrometry (ICP-AES) and direct current plasma atomic emission spectrometry (DCP-AES) for the following elements: Element Application Range (wt.%) Quantitative Range (wt.%) Aluminum 0–8 0.009 to 8.0 Boron 0–0.04 0.0008 to 0.01 Cobalt 0-1 0.006 to 0.1 Chromium 0–5 0.005 to 4.0 Copper 0–0.6 0.004 to 0.5 Iron 0–3 0.004 to 3.0 Manganese 0–0.04 0.003 to 0.01 Molybdenum 0–8 0.004 to 6.0 Nickel 0–1 0.001 to 1.0 Niobium 0-6 0.008 to 0.1 Palladium 0-0.3 0.02 to 0.20 Ruthenium 0-0.5 0.004 to 0.10 Silicon 0–0.5 0.02 to 0.4 Tantalum 0-1 0.01 to 0.10 Tin 0–4 0.02 to 3.0 Tungsten 0-5 0.01 to 0.10 Vanadium 0–15 0.01 to 15.0 Yttrium 0–0.04 0.001 to 0.004 Zirconium 0–5 0.003 to 4.0 1.2 This test method has been interlaboratory tested for the elements and ranges specified in the quantitative range part of the table in 1.1. It may be possible to extend this test method to other elements or broader mass fraction ranges as shown in the application range part of the table above provided that test method validation is performed that includes evaluation of method sensitivity, precision, and bias. Additionally, the validation study shall evaluate the acceptability of sample preparation methodology using reference materials or spike recoveries, or both. Guide E2857 provides information on validation of analytical methods for alloy analysis. 1.3 Because of the lack of certified reference materials (CRMs) containing bismuth, hafnium, and magnesium, these elements were not included in the scope or the interlaboratory study (ILS). It may be possible to extend the scope of this test method to include these elements provided that method validation includes the evaluation of method sensitivity, precision, and bias during the development of the testing method. 1.4 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.5 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. Specific safety hazards statements are given in Section 9. 1.6 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.

ASTM E2371-21a Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM E1097 Standard Guide for Direct Current Plasma Emission Spectrometry Analysis
• ASTM E1329 Standard Practice for Verification and Use of Control Charts in Spectrochemical Analysis
• ASTM E135 Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
• ASTM E1479 Standard Practice for Describing and Specifying Inductively-Coupled Plasma Atomic Emission Spectrometers
• ASTM E1601 Standard Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
• ASTM E1763 Standard Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods
• ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• ASTM E1832 Standard Practice for Describing and Specifying a Direct-Current-Plasma Optical Emission Spectrometer
• ASTM E2027 Standard Practice for Conducting Proficiency Tests in the Chemical Analysis of Metals, Ores, and Related Materials
• ASTM E2857 Standard Guide for Validating Analytical Methods
• ASTM E50 Standard Practice for Apparatus, Reagents, and safety Precautions for Chemical Analysis of Metals
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM E2371-21a history

• 2021 ASTM E2371-21a Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)
• 2021 ASTM E2371-21 Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)
• 2013 ASTM E2371-13 Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)
• 2004 ASTM E2371-04 Standard Test Method for Analysis of Titanium and Titanium Alloys by Atomic Emission Plasma Spectrometry