SIST-TP CEN/TR 10261:2013
(Main)Iron and steel - European standards for the determination of chemical composition
Iron and steel - European standards for the determination of chemical composition
This Technical Report lists, under Clause 3, the European Standards, which are currently available for the determination of the chemical composition of steel and iron. In Clause 4, it provides details of the range of application and gives the principle of the method for 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 http://www.cen.eu/cen/Sectors/TechnicalCommitteesWorkshops/CENTechnicalCommittees/Pages/WP.aspx?param=733643&title=ECISS/TC%20102.
Annex A contains a list of other European Standards and CEN Technical Reports applicable for the determination of the chemical composition of steels and irons. Annex B contains a list of withdrawn Euronorms, together with the corresponding replacement European Standards, if any. Annex C gives graphical representations of the concentration ranges of the methods available in this Technical Report. Figure C.1 gives the concentration ranges of the referee methods, Figure C.2 gives the concentration ranges of the routine methods and Figure C.3 represents the fields of application of all the methods available. Annex D provides a trilingual key of the abbreviations used in the Figures given in Annex C.
Eisen und Stahl - Europäische Normen für die Bestimmung der chemischen Zusammensetzung
Aciers et fontes - Normes européennes pour la détermination de la composition chimique
Le présent Rapport technique énumère, à l'Article 3, les Normes européennes actuellement disponibles pour
la détermination de la composition chimique des aciers et des fontes. Dans l'Article 4, il détaille le domaine
d'application et donne le principe de la méthode pour chaque norme.
Les projets de Normes européennes ou de Rapports techniques du CEN, en cours de préparation par
l'ECISS/TC 102 sont disponibles sur la page internet du CEN, par le lien
http://www.cen.eu/cen/Sectors/TechnicalCommitteesWorkshops/CENTechnicalCommittees/Pages/WP.aspx?
param=733643&title=ECISS/TC%20102.
L'Annexe A contient une liste d’autres Normes européennes et Rapports techniques du CEN applicables pour
la détermination de la composition chimique des aciers et des fontes.
L'Annexe B contient une liste des Euronorm annulées, ainsi que les Normes européennes correspondantes
qui les remplacent, le cas échéant.
L'Annexe C donne les représentations graphiques des intervalles de teneurs des méthodes présentées dans
le présent Rapport technique. La Figure C.1 donne les intervalles de teneurs des méthodes de référence, la
Figure C.2 donne les intervalles de teneurs des méthodes de routine et la Figure C.3 représente les domaines
d’application de toutes les méthodes disponibles.
L’Annexe D fournit une correspondance trilingue des abréviations utilisées dans les figures de l’Annexe C.
Železo in jeklo - Evropski standardi za določevanje kemijske sestave
V tem tehničnem poročilu so v točki 3 navedeni evropski standardi, ki so trenutno na voljo za določevanje kemijske sestave jekla in železa. V točki 4 so navedene podrobnosti glede območja uporabe in načela metod za posamezne standarde. Elementi, ki so v postopku priprave za evropske standarde ali tehnična poročila CEN v okviru ECISS/TC 102, so na voljo na spletni strani CEN preko povezave http://www.cen.eu/cen/Sectors/TechnicalCommitteesWorkshops/CENTechnical Committees/Pages/WP.aspx?param=733643&title=ECISS/TC%20102.
V dodatku A je seznam drugih evropskih standardov in tehničnih poročil CEN, ki se uporabljajo za določevanje kemijske sestave jekla in železa. V dodatku B je seznam preklicanih normativov EURONORM z ustrezno nadomestitvijo morebitnih evropskih standardov. V dodatku C so grafični prikazi območij koncentracije metod, ki so na voljo v tem tehničnem poročilu. Iz slike C.1 so razvidna območja koncentracije referenčnih metod, iz slike C.2 območja koncentracije rutinskih metod, iz slike C.3 pa področja uporabe vseh razpoložljivih metod. V dodatku D je trijezična legenda kratic, ki so uporabljene na slikah v dodatku C.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TP CEN/TR 10261:2013
01-maj-2013
1DGRPHãþD
SIST-TP CEN/TR 10261:2008
äHOH]RLQMHNOR(YURSVNLVWDQGDUGL]DGRORþHYDQMHNHPLMVNHVHVWDYH
Iron and steel - European standards for the determination of chemical composition
Eisen und Stahl - Europäische Normen für die Bestimmung der chemischen
Zusammensetzung
Aciers et fontes - Normes européennes pour la détermination de la composition chimique
Ta slovenski standard je istoveten z: CEN/TR 10261:2013
ICS:
77.040.30 Kemijska analiza kovin Chemical analysis of metals
77.080.01 Železne kovine na splošno Ferrous metals in general
SIST-TP CEN/TR 10261:2013 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST-TP CEN/TR 10261:2013
TECHNICAL REPORT
CEN/TR 10261
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
February 2013
ICS 77.040.30 Supersedes CEN/TR 10261:2008
English Version
Iron and steel - European standards for the determination of
chemical composition
Aciers et fontes - Normes européennes pour la Stahl und Eisen - Europäische Normen für die Bestimmung
détermination de la composition chimique der chemischen Zusammensetzung
This Technical Report was approved by CEN on 10 June 2012. It has been drawn up by the Technical Committee ECISS/TC 102.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 10261:2013: E
worldwide for CEN national Members.
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Contents Page
Foreword . 3
1 Scope . 4
2 Terms and definitions . 4
3 European Standards available for the determination of the chemical composition of steel
and iron. 4
3.1 Mono-elemental methods . 4
3.2 Multi-elemental methods. 7
4 Range of application and principle of the methods . 8
4.1 Mono-elemental methods . 8
4.2 Multi-elemental methods. 20
Annex A (informative) List of other European Standards and CEN Technical Reports applicable
for the determination of the chemical composition of steels and irons . 24
Annex B (informative) List of withdrawn Euronorms and of the corresponding replacement
European standards . 25
Annex C (informative) Graphical representation of the scope for methods available in this
technical report . 28
Annex D (informative) Trilingual key of the abbreviations used in the Figures given in Annex C . 32
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Foreword
This document (CEN/TR 10261:2013) has been prepared by Technical Committee ECISS/TC 102 “Methods
of chemical analysis for iron and steel”, the secretariat of which is held by SIS.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TR 10261:2008.
In comparison with the previous edition of CEN/TR 10261:2008, the following significant technical changes
were made:
Title;
Clause 2, Definitions – added;
In 3.1, for nitrogen, addition of EN ISO 15351:2010 and EN ISO 4945:2009;
In 3.1, for silicon, addition of EN ISO 439:2010;
In 3.1, for titanium, addition of EN 10211:1995;
In 3.2, for Al, Cr, Co, Cu, Mn, Mo, Ni, P, Sn and V, addition of EN 10351:2011;
In 3.2, for C and S, addition of EN ISO 15350:2010;
In 4.1.9.1, Principle of the method - reworded for technical correction;
4.1.12.3, Summary of EN ISO 15351:2010, added;
4.1.12.4, Summary of EN ISO 4945:2009, added;
4.1.15.3, Summary of EN ISO 439:2010, added;
4.1.17.1, Summary of EN 10211:1995, added;
4.2.1.1, Summary of EN 10351:2011, added;
4.2.4.1, Summary of EN ISO 15350:2010, added;
Annex A, updated;
Annex C, the concentration ranges are represented in three different graphics: one for the referee
methods, one for the routine methods and one for all the methods available.
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1 Scope
This Technical Report lists, under Clause 3, the European Standards, which are currently available for the
determination of the chemical composition of steel and iron. In Clause 4, it provides details of the range of
application and gives the principle of the method for 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
http://www.cen.eu/cen/Sectors/TechnicalCommitteesWorkshops/CENTechnicalCommittees/Pages/WP.aspx?
param=733643&title=ECISS/TC%20102.
Annex A contains a list of other European Standards and CEN Technical Reports applicable for the
determination of the chemical composition of steels and irons.
Annex B contains a list of withdrawn Euronorms, together with the corresponding replacement European
Standards, if any.
Annex C gives graphical representations of the concentration ranges of the methods available in this
Technical Report. Figure C.1 gives the concentration ranges of the referee methods, Figure C.2 gives the
concentration ranges of the routine methods and Figure C.3 represents the fields of application of all the
methods available.
Annex D provides a trilingual key of the abbreviations used in the Figures given in Annex C.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
referee method
stoichiometric method or a method calibrated against pure metals or stoichiometric compounds, which is to be
used for certification analysis or in case of arbitration
2.2
routine method
method calibrated against reference materials or certified reference materials, or against standard solutions
commercially available, which is widely used for control purposes (day to day analysis)
3 European Standards available for the determination of the chemical composition
of steel and iron
3.1 Mono-elemental methods
Aluminium, Al
EN 29658:1991, Steel — Determination of aluminium content — Flame atomic absorption spectrometric
method (ISO 9658:1990)
Arsenic, As
EN 10212:1995, Chemical analysis of ferrous materials — Determination of arsenic in steel and iron —
Spectrophotometric method
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Boron, B
EN 10200:2012, Chemical analysis of ferrous materials — Determination of boron in steels —
Spectrophotometric method
EN ISO 13900:2002, Steel — Determination of boron content — Curcumin spectrophotometric method after
distillation (ISO 13900:1997)
Calcium, Ca
EN 10177:1989, Chemical analysis of ferrous materials — Determination of calcium in steels — Flame atomic
absorption spectrometric method
Carbon, C
EN 10036:1989, Chemical analysis of ferrous materials — Determination of total carbon in steels and irons —
Gravimetric method after combustion in a stream of oxygen
EN ISO 15349-2:2003, Unalloyed steel — Determination of low carbon content — Part 2: Infrared absorption
method after combustion in an induction furnace (with preheating) (ISO 15349-2:1999)
EN ISO 9556:2001, Steel and iron — Determination of total carbon content — Infrared absorption method
after combustion in an induction furnace (ISO 9556:1989)
Chromium, Cr
EN 10188:1989, Chemical analysis of ferrous materials — Determination of chromium in steels and irons —
Flame atomic absorption spectrometric method
EN 24937:1990, Steel and iron — Determination of chromium content — Potentiometric or visual method
(ISO 4937:1986)
EN 24937:1990/AC:1991 (Editorial correction), Steel and iron — Determination of chromium content —
Potentiometric or visual method (ISO 4937:1986)
Copper, Cu
EN 24943:1990, Chemical analysis of ferrous metal — Determination of copper content — Flame atomic
absorption spectrometric method (ISO 4943:1985)
EN 24943:1990/AC:1991 (Editorial correction), Steel and cast iron — Determination of copper content —
Flame atomic absorption spectrometric method (ISO 4943:1985)
EN 24946:1990, Steel and cast iron — Determination of copper content — 2,2'diquinolyl spectrophotometric
method (ISO 4946:1984)
EN 24946:1990/AC:1991 (Editorial correction), Steel and cast iron — Determination of copper content —
2,2'diquinolyl spectrophotometric method (ISO 4946:1984)
Lead, Pb
EN 10181:1989, Chemical analysis of ferrous materials — Determination of lead in steels — Flame atomic
absorption spectrometric method
Manganese, Mn
EN 10071:2012, Chemical analysis of ferrous materials — Determination of manganese in steels and irons —
Electrometric titration method
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EN 24159:1989, Ferromanganese and ferrosilicomanganese — Determination of manganese content —
Potentiometric method (ISO 4159:1978, ed. 1)
EN 24159:1989/AC1:1989 (Editorial correction), Ferromanganese and ferrosilicomanganese — Determination
of manganese content — Potentiometric method (ISO 4159:1978, ed. 1)
EN ISO 10700:1995, Steel and iron — Determination of manganese content — Flame atomic spectrometric
method (ISO 10700:1994)
Nickel, Ni
EN 10136:1989, Chemical analysis of ferrous materials — Determination of nickel in steels and irons —
Flame atomic absorption spectrometric method
EN 24938:1990, Steel and iron — Determination of nickel content — Gravimetric or titrimetric method
(ISO 4938:1988)
EN 24938:1990/AC:1991 (Editorial correction), Steel and iron — Determination of nickel content —
Gravimetric or titrimetric method (ISO 4938:1988)
Niobium, Nb
EN 10178:1989, Chemical analysis of ferrous materials — Determination of niobium in steels —
Spectrophotometric method
Nitrogen, N
EN 10179:1989, Chemical analysis of ferrous materials — Determination of nitrogen (trace amounts) in
steels — Spectrophotometric method
EN ISO 10720:2007, Steel and iron — Determination of nitrogen content — Thermal conductimetric method
after fusion in a current of inert gas (ISO 10720:1997)
EN ISO 15351:2010, Steel and iron — Determination of nitrogen content — Thermal conductimetric method
after fusion in a current of inert gas (Routine method) (ISO 15351:1999)
EN ISO 4945:2009, Steel — Determination of nitrogen content — Spectrophotometric method
(ISO 4945:1977)
Oxygen, O
EN 10276-1:2000, Chemical analysis of ferrous materials — Determination of oxygen in steel and iron —
Part 1: Sampling and preparation of steel samples for oxygen determination
EN 10276-2:2003, Chemical analysis of ferrous materials — Determination of oxygen content in steel and
iron — Part 2: Infrared method after fusion under inert gas
Phosphorus, P
EN 10184:2006, Chemical analysis of ferrous materials — Determination of phosphorus in non-alloyed steels
and irons — Molybdenum blue spectrophotometric method
EN ISO 10714:2002, Steel and iron — Determination of phosphorus content — Phosphovanadomolybdate
spectrophotometric method (ISO 10714:1992)
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Silicon, Si
EN 24829-1:1990, Steel and cast iron — Determination of total silicon content — Reduced molybdosilicate
spectrophotometric method — Part 1: Silicon content between 0,05 and 1 % (ISO 4829-1:1986)
EN 24829-1:1990/AC:1991 (Editorial correction), Steel and cast iron — Determination of total silicon
content — Reduced molybdosilicate spectrophotometric method — Part 1: Silicon content between 0,05 and
1 % (ISO 4829-1:1986)
EN 24829-2:1990, Steel and cast iron — Determination of total silicon content — Reduced molybdosilicate
spectrophotometric method — Part 2: Silicon content between 0,01 and 0,05 % (ISO 4829-2:1988)
EN 24829-2:1990/AC:1991 (Editorial correction), Steel and cast iron — Determination of total silicon
content — Reduced molybdosilicate spectrophotometric method — Part 2: Silicon content between 0,01 and
0,05 % (ISO 4829-2:1988)
EN ISO 439:2010, Steel and iron — Determination of total silicon content — Gravimetric method
(ISO 439:1994)
Sulphur, S
EN 24935:1991, Steel and iron — Determination of sulphur content — Infrared absorption method after
combustion in an induction furnace (ISO 4935:1989)
EN ISO 4934:2003, Steel and iron — Determination of sulfur content — Gravimetric method (ISO 4934:2003)
Titanium, Ti
EN 10211:1995, Chemical analysis of ferrous materials — Determination of titanium in steel and iron — Flame
atomic absorption spectrometric method
EN ISO 10280:1995, Steel and iron — Determination of titanium content — Diantipyrylmethane
spectrophotometric method (ISO 10280:1991)
Vanadium, V
EN 24947:1991, Steel and cast iron — Determination of vanadium content — Potentiometric titration method
(ISO 4947:1986)
3.2 Multi-elemental methods
Aluminium, Al; Chromium, Cr; Cobalt, Co; Copper, Cu; Manganese, Mn; Molybdenum, Mo; Nickel,
Ni; Phosphorus, P; Tin, Sn and Vanadium, V
EN 10351:2011, Chemical analysis of ferrous materials — Inductively coupled plasma optical emission
spectrometric analysis of unalloyed and low alloyed steels — Determination of Mn, P, Cu, Ni, Cr, Mo, V, Co,
Al (total) and Sn [Routine method]
Aluminium, Al; Lead, Pb; Nickel, Ni; Silicon, Si and Zinc, Zn
EN 10318:2005, Determination of thickness and chemical composition of zinc- and aluminium-based metallic
coatings — Routine method
Carbon, C; Chromium, Cr; Copper, Cu; Manganese, Mn; Nickel, Ni; Phosphorus, P; Silicon, Si and
Sulphur, S
CR 10320:2004, Optical emission analysis of low alloy steels (routine method) — Method for determination of
C, Si, S, P, Mn, Cr, Ni and Cu
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Carbon, C and Sulphur, S
EN ISO 15350:2010, Steel and iron — Determination of total carbon and sulfur content — Infrared absorption
method after combustion in an induction furnace (routine method) (ISO 15350:2000)
Chromium, Cr; Cobalt, Co; Copper, Cu; Manganese, Mn; Molybdenum, Mo; Nickel, Ni; Niobium,
Nb; Phosphorus, P; Silicon, Si; Titanium, Ti and Vanadium, V
EN 10315:2006, Routine method for analysis of high alloy steel by X-ray Fluorescence Spectrometry (XRF) by
using a near by technique
4 Range of application and principle of the methods
4.1 Mono-elemental methods
4.1.1 Aluminium, Al
4.1.1.1 EN 29658:1991, Steel — Determination of aluminium content — Flame atomic absorption
spectrometric method (ISO 9658:1990).
Range of application:
Determination of aluminium contents from 0,005 % to 0,20 % (m/m) in non-alloyed steel.
Principle of the method:
a) Dissolution of a test portion in dilute hydrochloric and nitric acids;
b) Fusion of the acid-insoluble material with a mixture of orthoboric acid and potassium carbonate;
c) Spraying of the solution into a dinitrogen monoxide-acetylene flame;
d) Spectrometric measurement of the atomic absorption of the 309,3 nm spectral line emitted by an
aluminium hollow cathode lamp.
4.1.2 Arsenic, As
4.1.2.1 EN 10212:1995, Chemical analysis of ferrous materials — Determination of arsenic in steel
and iron — Spectrophotometric method.
Range of application:
Determination of arsenic contents from 0,001 % to 0,08 % (m/m) in all types of steel and iron.
Principle of the method:
a) Dissolution of a test portion in a mixture of nitric and hydrochloric acids followed by evaporation to dryness
and prolonged heating of the dried residue;
b) Extraction of the residue with acid, reduction of the arsenic (As V to As III) by addition of potassium iodine,
ascorbic acid and tin (II) chloride. Conversion of the arsenic to arsenic hydride (arsine) with zinc;
c) Absorption of the evolved arsine in a solution of silver diethyldithiocarbamate and l-ephedrin in
trichloromethane;
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d) Spectrophotometric measurement of the reddish-violet coloured colloid at a wavelength between 500 nm
and 520 nm.
4.1.3 Boron, B
4.1.3.1 EN 10200:2012, Chemical analysis of ferrous materials — Determination of boron in
steels — Spectrophotometric method.
Range of application:
Determination of boron content from 0,000 4 % to 0,012 0 % (m/m) in non-alloyed and alloyed steels.
Principle of the method:
a) Dissolution of a test portion with hydrochloric and nitric acids;
b) Decomposition of boron compounds (nitrides etc.) with orthophosphoric and sulphuric acids at 290 °C.
Spectrophotometric measurement at a wavelength of 543 nm of the complex formed between boric acid
and curcumin in buffered acetic medium.
4.1.3.2 EN ISO 13900:2002, Steel — Determination of boron content — Curcumin
spectrophotometric method after distillation (ISO 13900:1997).
Range of application:
Determination of boron content from 0,000 05 % to 0,001 0 % (m/m) in steel.
Principle of the method:
a) Dissolution of a test portion in hydrochloric and nitric acids. Decomposition of boron compounds (nitrides,
etc.) with orthophosphoric and sulphuric acids at a temperature of 290 °C;
b) Distillation of the solution after the addition of methanol and collection of methylborate in a receiver
containing sodium hydroxide solution;
c) Evaporation of the solution to dryness. Formation of a coloured complex between orthoboric acid and
curcumin in a methanol medium;
d) Spectrophotometric measurements at a wavelength of about 550 nm.
4.1.4 Calcium, Ca
4.1.4.1 EN 10177:1989, Chemical analysis of ferrous materials — Determination of calcium in
steels — Flame atomic absorption spectrometric method.
Range of application:
Determination of calcium contents greater than 0,000 2 % (m/m) in non-alloyed and low-alloy steels.
Principle of the method:
a) Dissolution of a test portion with hydrochloric acid followed by oxidation with nitric acid;
b) Addition of potassium chloride solution and spraying of the solution into an acetylene-nitrous oxide flame;
determination of the calcium by means of the spectrometric measurement of the atomic absorption of the
422,67 nm line emitted by a calcium hollow cathode lamp.
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4.1.5 Carbon, C
4.1.5.1 EN 10036:1989, Chemical analysis of ferrous materials — Determination of total carbon in
steels and irons — Gravimetric method after combustion in a stream of oxygen.
Range of application:
Determination of carbon content equal to or greater than 0,1 % (m/m) in steels and irons.
Principle of the method:
a) Combustion of a test portion in a stream of oxygen in a high temperature furnace (1 200 °C – 1 400 °C),
with the addition of a fluxing agent to assist combustion;
b) Absorption of the evolved carbon dioxide in soda asbestos contained in a weighed absorption bulb;
c) Calculation of the carbon content from the increase in mass of the absorption bulb.
4.1.5.2 EN ISO 15349-2:2003, Unalloyed steel — Determination of low carbon content — Part 2:
Infrared absorption method after combustion in an induction furnace (with preheating) (ISO 15349-
2:1999).
Range of application:
Carbon contents from 0,000 3 % to 0,010 % (m/m) in unalloyed steel.
Principle of the method:
a) Preheating of a test portion at low temperature and combustion of a test portion with accelerator at a high
temperature in an induction furnace in a current of pure oxygen;
b) Transformation of carbon into carbon dioxide and/or carbon monoxide;
c) Measurement of infrared absorption of the carbon dioxide or carbon dioxide/carbon monoxide evolved
from steel and carried by a current of pure oxygen;
d) Calibration graph is established using sucrose or calcium carbonate.
4.1.5.3 EN ISO 9556:2001, Steel and iron — Determination of total carbon content — Infrared
absorption method after combustion in an induction furnace (ISO 9556:1989).
Range of application:
Determination of carbon contents from 0,003 % to 4,5 % (m/m) in steel and iron.
Principle of the method:
a) Combustion of a test portion with accelerator at a high temperature in a high-frequency induction furnace
in a current of pure oxygen; transformation of carbon into carbon dioxide and/or carbon monoxide;
b) Measurement by infrared absorption of the carbon dioxide and/or carbon monoxide carried by a current of
oxygen.
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4.1.6 Chromium, Cr
4.1.6.1 EN 10188:1989, Chemical analysis of ferrous materials — Determination of chromium in
steels and irons — Flame atomic absorption spectrometric method.
Range of application:
Determination of chromium contents from 0,002 % to 2,0 % (m/m) in non-alloy and low-alloy steels and
irons.
Principle of the method:
a) Dissolution of a test portion with hydrochloric acid followed by oxidation with nitric acid. Filtration and
ignition of the acid insoluble residue. Removal of silica with hydrofluoric acid. Fusion of the residue with
potassium hydrogen sulphate, extraction of the melt in acid and addition of the extract to the reserved
filtrate;
b) Determination of the chromium by means of the spectrometric measurement of the atomic absorption of
the 357,87 nm line emitted by a chromium hollow cathode lamp when the solution is nebulised into a
nitrous oxide acetylene flame.
4.1.6.2 EN 24937:1990, Steel and iron — Determination of chromium content — Potentiometric or
visual method (ISO 4937:1986).
Range of application:
Determination of chromium contents from 0,25 % to 35 % (m/m) in steel and iron.
Principle of the method:
a) Dissolution of a test portion with appropriate acids;
b) Oxidation of chromium in an acid medium to chromium (VI) by ammonium peroxydisulfate in the presence
of silver sulphate. Reduction of manganese (VII) by hydrochloric acid;
c) Reduction of chromium (VI) by ammonium iron (II) sulphate standard solution;
d) In the case of potentiometric detection, determination of the equivalence point by measurement of the
potential variation when the ammonium iron (II) sulphate standard solution is being added;
e) In the case of visual detection, titration of the excess ammonium iron (II) sulphate by potassium
permanganate standard solution which also acts as the indicator.
4.1.7 Copper, Cu
4.1.7.1 EN 24943:1990, Chemical analysis of ferrous metal — Determination of copper content —
Flame atomic absorption spectrometric method (ISO 4943:1985).
Range of application:
Determination of copper contents from 0,004 % to 0,5 % (m/m) in steel and cast iron.
Principle of the method:
a) Dissolution of a test portion in mixture of hydrochloric, nitric and perchloric acids. Spraying of the solution
into an air-acetylene flame. Spectrometric measurement of the atomic absorption of the 324,7 nm
spectral line emitted by a copper hollow cathode lamp.
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4.1.7.2 EN 24946:1990, Steel and cast iron — Determination of copper content — 2,2'diquinolyl
spectrophotometric method (ISO 4946:1984).
Range of application:
Determination of copper contents from 0,02 % to 5 % (m/m) in steel and cast irons.
Principle of the method:
a) Dissolution of a test portion with appropriate acids;
b) Fuming with perchloric acid to remove hydrochloric and nitric acids and dehydrate silicic acid;
c) Reduction of copper (II) to copper (I) in hydrochloric acid solution by means of ascorbic acid. Formation of
a coloured compound of copper (I) with 2,2'-diquinolyl;
d) Spectrophotometric measurement at a wavelength of about 545 nm.
4.1.8 Lead, Pb
4.1.8.1 EN 10181:1989, Chemical analysis of ferrous materials — Determination of lead in steels —
Flame atomic absorption spectrometric method.
Range of application:
Determination of lead contents from 0,003 % to 0,5 % (m/m) in non-alloy and low-alloy steels.
Principle of the method:
a) Dissolution of a test portion with hydrochloric acid followed by oxidation with nitric acid;
b) Spraying of the solution into an air-acetylene flame. Determination of the lead by means of the
spectrometric measurement of the atomic absorption of the 283,3 nm line emitted by a lead radiation
source;
c) The instrument is calibrated by addition of a lead standard solution to a similar matrix to that of the test
solution.
4.1.9 Manganese, Mn
4.1.9.1 EN 10071:2012, Chemical analysis of ferrous materials — Determination of manganese in
steels and irons — Electrometric titration method.
Range of application:
Determination of manganese contents greater than or equal to 0,5 % (m/m) in unalloyed, low alloy or
alloyed steels and irons.
Principle of the method:
a) Dissolution of the test portion with appropriate acids, followed by a partial neutralisation of the acids with
sodium hydrogen carbonate;
b) Precipitation of the interfering cations with zinc oxide;
c) Titration of Mn (II) with a potassium permanganate solution, in a pyrophosphoric medium at a pH of about
6,5;
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d) The oxidation-reduction reaction [oxidation of Mn (II) to Mn (III)] is controlled by an electrometric
measurement.
4.1.9.2 EN 24159:1989, Ferromanganese and ferrosilicomanganese — Determination of
manganese content — Potentiometric method (ISO 4159:1978, ed. 1).
Range of application:
Determination of manganese content of ferromanganese and ferrosilicomanganese alloys containing from
55 to 95 % (m/m) of manganese.
Principle of the method:
a) Dissolution of a test portion with hydrochloric, hydrofluoric and perchloric acids. Potentiometric
determination of manganese with potassium permanganate in a pyrophosphoric medium at a controlled
pH, according to the reaction:
2+ - + 2- 3-
4 Mn + MnO + 8 H + 15 (P O H ) → 5 Mn(P O H ) + 4 H O
4 2 7 2 2 7 2 3 2
4.1.9.3 EN ISO 10700:1995, Steel and iron — Determination of manganese content — Flame
atomic spectrometric method (ISO 10700:1994).
Range of application:
Determination of manganese contents from 0,002 % to 2,0 % (m/m).
Principle of the method:
a) Dissolution of a test portion in hydrochloric and nitric acids followed by evaporation with perchloric acid
until white fumes appear;
b) Spraying of the solution into an air-acetylene flame;
c) Spectrometric measurement of the atomic absorption of the 279,5 nm spectral line emitted by a
manganese hollow cathode lamp.
4.1.10 Nickel, Ni
4.1.10.1 EN 10136:1989, Chemical analysis of ferrous materials — Determination of nickel in steel
and irons — Flame atomic absorption spectrometric method.
Range of application:
Determination of nickel contents from 0,003 % to 2 % (m/m) in steels and irons.
Principle of the method:
a) Dissolution of a test portion in a mixture of appropriate acids and fuming with perchloric acid;
b) Spraying of the solution into an air-acetylene flame; determination of the nickel by means of the
spectrometric measurement of the atomic absorption of the 232,0 nm or 352,5 nm line emitted by a nickel
hollow cathode lamp;
c) The instrument is calibrated by addition of a nickel standard solution to a similar matrix to that of the test
solution.
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4.1.10.2 EN 24938:1990, Steel and iron — Determination of nickel content — Gravimetric or
titrimetric method (ISO 4938:1988).
Range of application:
Determination of nickel contents from 0,5 % to 30 % (m
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