EN 27627-4:1993

Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,01 to 0,5 % (m/m) (ISO 7627-4:1983)

General requirements concerning the field of application, principle, interfering elements,aparatus, sampling and test report are given in ISO 7627-1.

Hartmetalle - Chemische Analyse durch Flammenatomabsorptionsspektrometrie - Teil 4: Bestimmung des Molybdän-, Titan-, und Vanadiumgehaltes von 0,01 bis 0,5 % (m/m) (ISO 7627-4:1983)

Métaux-durs - Analyse chimique par spectrométrie d'absorption atomique dans la flamme - Partie 4: Dosages du molybdène, du titane et du vanadium à des teneurs comprises entre 0,01 et 0,5 % (m/m) (ISO 7627-4:1983)

La présente partie de l'ISO 7627 spécifie la méthode à utiliser pour le dosage par spectrométrie d'absorption atomique dans la flamme du molybdène, du titane et du vanadium dans les métaux-durs, à des teneurs en chacun de ces éléments comprises entre 0,01 et 0,05 % (m/m). Les prescriptions générales concernant le domaine d'application, le principe, les interférences, l'appareillage, l'échantillonnage et le procès-verbal d'essai figurent dans l'ISO 7627/1.

Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,01 to 0,5 % (m/m) (ISO 7627-4:1983)

General Information

• Status: Published
• Publication Date: 06-Apr-1993
• Withdrawal Date: 30-Oct-1993
• ICS: 77.040.30 - Chemical analysis of metals
• ICS: 77.160 - Powder metallurgy
• Technical Committee: CEN/SS M11 - Powder metallurgy
• Drafting Committee: CEN/SS M11 - Powder metallurgy
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 13-Oct-1999
• Completion Date: 13-Oct-1999
• Ref Project: SIST EN 27627-4:2000 - Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,01 to 0,5 % (m/m) (ISO 7627-4:1983)

Overview

EN 27627-4:1993 is a European standard developed by CEN for the chemical analysis of hardmetals using flame atomic absorption spectrometry (FAAS). Specifically, this standard outlines a precise analytical method for the determination of molybdenum (Mo), titanium (Ti), and vanadium (V) in hardmetal samples at concentrations ranging from 0.01% to 0.5% by mass (m/m). It aligns with the international equivalent ISO 7627-4:1983 and supplements the general requirements set out in ISO 7627-1.

This standard is essential for manufacturers and quality control laboratories in powder metallurgy and metal analysis fields, enabling accurate characterization of key alloying elements in hardmetals. By standardizing the chemical analysis procedure, EN 27627-4:1993 ensures reliable measurement data critical for maintaining material performance and compliance.

Key Topics

• Scope & Application
  Defines the application of flame atomic absorption spectrometry for determining Mo, Ti, and V contents within specified concentration limits in hardmetals. General procedural principles, apparatus requirements, sampling methods, and reporting criteria refer to ISO 7627-1.

• Reagents and Sample Preparation
  Utilizes specific reagents such as hydrofluoric acid, nitric acid, ammonium fluoride, and caesium chloride to dissolve and prepare test samples for FAAS analysis. Proper sample dissolution ensures complete extraction of target elements.

• Analytical Procedure
  Details step-by-step sample weighing, dissolution, dilution, and preparation of calibration and blank solutions to guarantee accuracy. Calibration curves are developed with high-purity standards for quantification.

• Operating Parameters for FAAS
  Specifies instrumental parameters such as wavelength settings (e.g., 313.3 nm for molybdenum) and flame conditions (fuel-rich flame with N2O oxidant) to optimize the atomic absorption measurements.

• Calculation and Reporting of Results
  Includes formulas for calculating element concentration as percentage mass and guidelines for rounding and reporting values. Emphasizes acceptable tolerances to ensure measurement repeatability within 0.2 times the element content.

• Safety Precautions
  Advises adherence to manufacturer instructions for flame ignition and safety protocols during acid handling and spectrometry operation.

Applications

• Quality Control in Hardmetal Manufacturing
  Enables manufacturers to accurately analyze molybdenum, titanium, and vanadium content, which is crucial in controlling the hardness, wear resistance, and performance of carbide-based tools and components.

• Powder Metallurgy Research
  Supports R&D laboratories in characterizing alloy compositions and investigating the effects of elemental variations on material properties.

• Regulatory Compliance and Certification
  Assists laboratories in meeting national and international standards for material composition, ensuring product certification and market acceptance.

• Material Failure Analysis
  Helps forensic engineers and metallurgists determine elemental deviations that may contribute to component failure or substandard performance.

Related Standards

• ISO 7627-1 – General requirements for chemical analysis of hardmetals by flame atomic absorption spectrometry, covering field of application, principles, sampling, and test reporting.

• EN 27627 (Parts 1 to 7) – A series of standards detailing chemical analysis methods for various elements in hardmetals, supporting standardized testing protocols across the industry.

• ISO/TC 119 – Technical committee responsible for powder metallurgy standards, including those related to chemical analysis methods for metal powders and hardmetals.

• Additional FAAS Standards – Standards related to atomic absorption spectrometry techniques for metals analysis, ensuring consistency across analytical laboratories.

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By adhering to EN 27627-4:1993, industries involved with hardmetals can implement a robust, internationally recognized analytical method for essential alloy elements, improving quality assurance and material performance reliability. This standard remains a critical reference for precise chemical analysis in the fields of powder metallurgy and metal chemistry.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,01 to 0,5 % (m/m) (ISO 7627-4:1983)Hartmetalle - Chemische Analyse durch Flammenatomabsorptionsspektrometrie - Teil 4: Bestimmung des Molybdän-, Titan-, und Vanadiumgehaltes von 0,01 bis 0,5 % (m/m) (ISO 7627-4:1983)Métaux-durs - Analyse chimique par spectrométrie d'absorption atomique dans la flamme - Partie 4: Dosages du molybdene, du titane et du vanadium a des teneurs comprises entre 0,01 et 0,5 % (m/m) (ISO 7627-4:1983)Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,01 to 0,5 % (m/m) (ISO 7627-4:1983)77.160Metalurgija prahovPowder metallurgy77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 27627-4:1993SIST EN 27627-4:2000en01-december-2000SIST EN 27627-4:2000SLOVENSKI
STANDARD
- International Standard 762714 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEX~YHAPOAHAR OPTAHM3AUMR fl0 CTAH~APTM3A~MM.ORGANlSATlON INTERNATIONALE DE NORMALISATION Hardmetals - Chemical analysis by flame’.atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,Ol to 0,5 % (mlm) Mkaux-durs - Analyse cbimique par spectrometrie d’absorp tion a tomique dans Ia flamme - Partie 4: Dosage du mo/ybd&ne, du titane et du vanadium a des teneurs comprises entre Q,Ol et 0,5 % (mlm) First edition - 1983-10-15 UDC 669.018.25 : 643.422 . r .< ’ Ref. No. ISO 7627/4-1983 (EI SIST EN 27627-4:2000

Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of developing International Standards is carried out through ISO technical committees. Every member body interested in a subject for which a technical committee has been authorized has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take patt in the work. Draft International Standards adopted by the technical committees are circulated to the member bodiesfor approval before their acceptance as International Standards by the ISO Council. International Standard ISO 7627/4 was developed by Technical Committee ISO/TC 119, Powder metahrgy, and was circulated to the member bodies in August 1982. lt has been approved by the member bodies of the following countries: Austria Germany, F. R. Brazil Italy Bulgaria Korea, Rep. of China Norway Czechoslovakia Poland Egypt, Arab Rep. of Romania France South Africa, Rep. of Spain Sweden Switzerland United Kingdom USA USSR No member body expressed disapproval of the document. 0 International Organkation for Standardkation, 1983 0 Printed in Switzerland SIST EN 27627-4:2000

INTERNATIONAL STANDARD ISO 7627/4-1983 (E) Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 4: Determination of molybdenum, titanium and vanadium in contents from 0,Ol to 0,5 % (mlm) . 1 Scope and field of application This part of ISO 7627 specifies the method to be used for the determination of molybdenum, titanium and vanadium con- tents of hardmetals within the range 0,Ol to 0,5 % (Nm) by flame atomic absorption spectrometry. General requirements concerning the fieid of application, prin- ciple, interfering elements, apparatus, sampling and test report are given in ISO 7627/1. 2 Reference ISO 762711, Hardmetals - Chemical analysis b y flame atomic absorp tion spectrometry - Part 7: General requirements. . 3 Reagents 3.1 Hydrofluoric acid, Q 1,12 g/ml. 3.2 Nitrit acid, Q 1,42 g/ml. 3.3 Ammonium fluoride, 0,l g/ml solution. 3.4 Caesium chloride, 0,Ol g/ml Solution. 3.5 High-purity stock solutions, for calibration purposes for each element to be determined, containing 1,600 g of the element per litre. NOTE - This value is understood to establish a maximum limit of 1,000 5 g and a minimum limit of 0,999 5 g. 4 Procedure 4.1 Test Portion Weigh, to the nearest 0,001 g, approximately 1 g of t
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