1. Scope

1.1 This test method provides for the X-ray spectrochemical analysis of stainless steels for the determination of the following elements in the ranges indicated:

Note 1--These concentration ranges can be extended by the use of suitable reference materials. The detection limit for the elements is lower than the listed value. The ranges represent the nominal levels at which this method was tested.

1.2 This test method is applicable to the control analysis of either chill-cast or wrought samples having a diameter of approximately 25 mm.

Note 2--Samples of greater or lesser size than those designated may be used with specially designed sample holders.

1.3 Matrix effects exist between the elements listed. To compensate for these effects, a series of calibration curves are required to cover the designated concentration ranges. The composition of the sample must approximate closely one or more of the reference materials used in the calibration curve which is applied. Mathematical corrections may also be used to solve for matrix effects. (Refer to Practice E1361.) A variety of such systems is commonly used. Any of these are acceptable that will achieve analytical accuracy equivalent to that reported for the method.

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. Specific hazard statements are given in Section 7.

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

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

E305 Practice for Establishing and Controlling Atomic Emission Spectrochemical Analytical Curves

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E1361 Guide for Correction of Interelement Effects in X-Ray Spectrometric Analysis

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

E1621 Guide for X-Ray Emission Spectrometric Analysis

E1806 Practice for Sampling Steel and Iron for Determination of Chemical Composition

Keywords

elemental analysis; spectrometric analysis; stainless steel; wavelength dispersive; X-ray fluorescence;

ICS Code

ICS Number Code 77.140.20 (Steels of high quality)

DOI: 10.1520/E0572-94R00E01

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