ECISS/TC 102/WG 5 - Chemical analysis of ferro alloys

This document lists, under Clause 4, the European Standards which are currently available for the determination of the chemical composition of steels and cast irons.
In Clause 5, this document provides details on the range of application and gives the principle of the method described in each standard.
Items which are under preparation as European Standards or as CEN Technical Reports by ECISS/TC 102 are available on the webpage of CEN, through the  following link: https://standards.cen.eu/dyn/www/f?p=204:22:0::::FSP_ORG_ID:733643&cs=123E58BF77E3DE921F548B80C5FF2E5D4.
Annex A gives a list of other European Standards and CEN Technical Reports applicable for the determination of the chemical composition of steels and cast irons.
Annex B gives a list of withdrawn Euronorms, together with the corresponding replacement European Standards, if any.
Annex C shows graphical representations of the content ranges of the methods listed in this document. Figure C.1 gives the content ranges of the referee methods, Figure C.2 gives the content ranges of the routine methods and Figure C.3 represents the fields of application of all the methods described.
Annex D provides a trilingual key of the abbreviations used in the Figures given in Annex C.
NOTE   Three methods applicable for the analysis of some ferro-alloys are listed in Annex A.

This document describes the classification, method of sample preparation, certification main rules and certificate content of the EURONORM-CRMs.
It also details the sample presentation of the various producers' organizations and the distributing sources.

The present Technical Report gives guidance regarding the chemical composition controls of steels (except chrome plated products) and cast irons in respect of the European legislation, namely Directives 2011/65/EU (RoHS) [1], repealing 2002/95/EU, the Commission Delegated Directive EU 2015/863 amending Annex II to Directive 2011/65/EU [10] and 2000/53/EC (ELV) [2].
These Directives require the characterization of these materials for Cadmium (Cd), hexavalent chromium (Cr (VI)), mercury (Hg), Lead (Pb), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE) and the four phthalates DEHP, BBP DBP and DIBP. Nevertheless, the Directives do not reflect the correspondence between these elements/compounds and the normal composition of each material concerned. In other words, for every material there is an obligation to determine all the compounds listed, independently of the relevance of such controls.

This Technical Report is a guideline to carry out the statistical evaluation of data from an inter laboratory test for method validation.
Its purpose is to detail the methodology of ISO 5725 1:1994, ISO 5725 2:1994 and ISO 5725 3:1994 for the treatment of the data collected under the conditions used within the ECISS/TC 102 working groups.
NOTE   The present document is not a simplification of the ISO 5725 standard, which is the only reference document.

The present statistical procedure describes how to check results for absence of bias by comparison of these analytical results with those obtained during the certification of CRMs.
If the resulting data confirm the absence of bias, the method may be considered accurate when applied to all steels and irons whose composition ranges are adequately covered or bounded by the CRMs used.
The resulting data give also an estimate of the repeatability and/or the intermediate precision ("intralaboratory reproducibility") for the CRMs used. The comparison of these analytical data with the repeatability data obtained during the certification may also be performed depending on the strict purpose of the method under consideration.
For the purpose of this Technical Report, the use of existing CRMs is essential for the assessment of the trueness, but it may be only indicative for the other statistical data.
NOTE   This Technical Report does not describe the use of CRMs as calibrants, this subject being treated in ISO Guide 32.

This document lists, under Clause 4, the European Standards which are currently available for the determination of the chemical composition of steels and cast irons.
In Clause 5, this document provides details on the range of application and gives the principle of the method described in each standard.
Items which are under preparation as European Standards or as CEN Technical Reports by ECISS/TC 102 are available on the webpage of CEN, through the link https://standards.cen.eu/dyn/www/f?p=204:22:0::::FSP_ORG_ID:733643&cs=123E58BF77E3DE921F548B80C5FF2E5D4.
Annex A gives a list of other European Standards and CEN Technical Reports applicable for the determination of the chemical composition of steels and cast irons.
Annex B gives a list of withdrawn Euronorms, together with the corresponding replacement European Standards, if any.
Annex C shows graphical representations of the content ranges of the methods listed in this document. Figure C.1 gives the content ranges of the referee methods, Figure C.2 gives the content ranges of the routine methods and Figure C.3 represents the fields of application of all the methods described.
Annex D provides a trilingual key of the abbreviations used in the Figures given in Annex C.
NOTE   Three methods applicable for the analysis of some ferro-alloys are listed in Annex A.

Gives methods for the determination of the chemical composition of pig iron, cast iron and steel. Methods are specified for use with both liquid and solid metal. Replaces ISO 377-2:1989.