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Significance and Use
5.1 The chemical composition of stainless steels must be determined accurately to ensure the desired metallurgical properties. This procedure is suitable for manufacturing control and inspection testing.
1.1 This test method2 covers the analysis of austenitic stainless steel by spark atomic emission vacuum spectrometry for the following elements in the ranges shown
Composition Range, %
17.0 to 23.0
7.5 to 13.0
0.01 to 3.0
0.01 to 2.0
0.01 to 0.90
0.01 to 0.30
0.005 to 0.25
0.003 to 0.15
0.003 to 0.065
1.2 This test method is designed for the routine analysis of chill-cast disks or inspection testing of stainless steel samples that have a flat surface of at least 13 mm (0.5 in.) in diameter. The samples must be sufficiently massive to prevent overheating during the discharge and of a similar metallurgical condition and composition as the reference materials.
1.3 One or more of the reference materials must closely approximate the composition of the specimen. The technique of analyzing reference materials with unknowns and performing the indicated mathematical corrections may also be used to correct for interference effects and to compensate for errors resulting from instrument drift. A variety of such systems are commonly used. Any of these that will achieve analytical accuracy equivalent to that reported for this test method are acceptable.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E305 Practice for Establishing and Controlling Atomic Emission Spectrochemical Analytical Curves
E406 Practice for Using Controlled Atmospheres in Spectrochemical Analysis
E1060 Practice for Interlaboratory Testing of Spectrochemical Methods of Analysis Withdrawn 1997.
E1329 Practice for Verification and Use of Control Charts in Spectrochemical Analysis
E1806 Practice for Sampling Steel and Iron for Determination of Chemical Composition
Other ASTM Documents
ASTM MNL 7 Manual on Presentation of Data and Control Chart Analysis ASTM Manual Series, ASTM International, 8th edition, 2010.
ICS Number Code 77.040.30 (Chemical analysis of metals); 77.140.20 (Steels of high quality)
UNSPSC Code 41115403(Spectrometers); 11171600(Stainless steel alloys)