BS ISO 19272:2015 INTERNATIONAL ISO STANDARD 19272 First edition 2015-08-15 Low alloyed steel Determination of C, Si, Mn, P, S, Cr, Ni, Al, Ti and Cu - Glow discharge optical emission spectrometry (routine method) Aciers faiblement allies - Determination de C, Si, Mn, P, S, Cr, Ni, Al, Ti et Cu - Spectrométrie d'émission optique a décharge luminescente (méthode de routine) Reference number ISO 19272:2015(E) ISO @IS02015 BS ISO 19272:2015 IS0 19272:2015(E) Contents Page Foreword .iv 1 Scope .1 2 Normative references .1 3 Principle .2 4 Apparatus .2 4.1 Glow discharge optical emission spectrometer 22 4.1.1 General 4.1.2 Short term stability 2 4.1.3 Detection limit 2 4.1.4 Data acquisition and processing system 2 4.1.5 Others 2 5 Sampling. .3 6 Procedure .3 6.1 Sample preparation .3 6.2 Selection of spectral lines .3 6.3 Optimization of the instrument. 4 6.3.1 General .4 6.3.2 Setting the discharge parameters of a direct current (DC) source ..4 6.3.3 Setting the discharge parameters of radiofrequency (RF) source. .5 6.3.4 Optimization of the detection system .6 6.3.5 Pre-burning time and integration time 6 6.3.6 Validation of the instrumental parameters 6 6.4 Calibration 6 6.5 Checking of the trueness of the method .7 6.6 Drift correction. 7 6.7 Analysis of the samples. .7 7 Expression of results 1 7.1 Method of calculation .7 7.2 Precision. .7 8 Test report 11 Annex A (informative) Detection limit. .12 Annex B (informative) Additional information on international interlaboratory test .14 Annex C (informative) Graphical representation of precision data .22 Bibliography .32 IS02015-Allrightsreserved iii BS ISO 19272:2015 IS0 19272:2015(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out throughIsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committee has been established has the right to be represented on that committee. International ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISo/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of Iso documents should be noted. This document was drafted in accordance with the editorial rules of the ISo/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the Iso list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constituteanendorsement. For an explanation on the meaning of Iso specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISo/TC 17, Steel, Subcommittee SC 1, Method of determinationofchemicalcomposition iv @ IS0 2015 - All rights reserved