EN 27627-2:1993
(Main)Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)
Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)
General requirements concerning the field of application, principle, interfering elements,aparatus, sampling and test report are given in ISO 7627-1. In low concentrations the determination of these elements is very critical.
Hartmetalle - Chemische Analyse durch Flammenatomabsorptionsspektrometrie - Teil 2: Bestimmung des Calcium-, Kalium-, Magnesium- und Natriumgehaltes von 0,001 bis 0,02 % (m/m) (ISO 7627-2:1983)
Métaux-durs - Analyse chimique par spectrométrie d'absorption atomique dans la flamme - Partie 2: Dosage du calcium, du potassium, du magnésium et du sodium à des teneurs comprises entre 0,001 et 0,02 % (m/m) (ISO 7627-2:1983)
La présente partie de l'ISO 7627 spécifie la méthode à utiliser pour le dosage par spectrométrie d'absorption atomique dans la flamme du calcium, du potassium, du magnésium et du sodium dans les métaux-durs, à des teneurs en chacun de ces éléments comprises entre 0,001 et 0,02 % (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.
NOTE -- La méthode de dosage de ces éléments est très critique aux faibles concentrations. On veillera avec soin à éviter toute pollution par l'atmosphère ou les réactifs utilisés.
Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)
General Information
Overview
EN 27627-2:1993, aligned with ISO 7627-2:1983, defines a standardized method for the chemical analysis of hardmetals through flame atomic absorption spectrometry (FAAS). This part of the standard focuses specifically on the quantitative determination of trace amounts of calcium, potassium, magnesium, and sodium within a concentration range from 0.001% to 0.02% (m/m). Given the low concentration levels involved, this standard highlights the critical precision and care needed in sample preparation, analysis, and reporting.
The standard is essential for industries dealing with powder metallurgy and hardmetal manufacturing, ensuring reliable and reproducible measurement of these elements, which can influence material properties and performance.
Key Topics
Scope and Field of Application
Covers determination of Ca, K, Mg, and Na in hardmetals using FAAS, within specified low concentration ranges. It supplements the general requirements provided by ISO 7627-1, with emphasis on avoiding contamination during analysis.Sample Preparation and Reagents
Utilizes careful dissolution of approximately 1g test portions in controlled volumes of hydrofluoric and nitric acids, with additions of ammonium fluoride and cesium chloride to complex interfering ions. High-purity reagents and decontaminated equipment are critical.Flame Atomic Absorption Spectrometry Setup
Specifies instrumental parameters including optimal wavelengths for each element, oxidants, and sensitivity ranges. Calibration employs matrix-matched solutions and stock standards to ensure accuracy.Calibration and Measurement Procedure
Multiple calibration solutions with known concentrations are prepared alongside blank samples. Absorbance measurements are taken systematically, with at least two replicates per solution to guarantee reliability.Calculation and Reporting of Results
Element concentration is expressed as a mass percentage using a defined formula incorporating measured absorbance, dilution volume, and sample mass. Permissible deviations in repeated measurements enhance confidence in results.
Applications
Quality Control in Hardmetal Production
Precise determination of Ca, K, Mg, and Na helps control impurities that may affect sintering, hardness, or corrosion resistance of tungsten carbide and cobalt-based hardmetals.Powder Metallurgy Research and Development
Enables detailed chemical profiling of powder blends to optimize compositions and improve mechanical properties.Environmental and Process Monitoring
Quantitative monitoring of alkali and alkaline earth metals that can influence equipment wear or powder behaviors during manufacturing.Standardized Reporting in Commercial and Regulatory Contexts
Provides a consistent framework for international laboratories and manufacturing plants to produce comparable and legally defensible analytical data.
Related Standards
ISO 7627-1: General Requirements in FAAS for Hardmetals
Establishes the foundational principles, apparatus specifications, and sampling procedures for atomic absorption analysis in hardmetals.Other Hardmetal Analytical Standards
Covering different elements, alternative spectrometric methods, or complementary techniques like inductively coupled plasma (ICP).Standards on Sampling and Sample Preparation
Ensuring representative sample collection and preparation aligned with metallurgical quality assurance.
By adhering to EN 27627-2:1993, laboratories ensure accurate, reproducible, and contamination-free analyses of trace metallic elements in hardmetals, fostering better product quality, process control, and compliance with international manufacturing standards. This contributes significantly to advancing the powder metallurgy and hardmetal industries globally.
Frequently Asked Questions
EN 27627-2:1993 is a standard published by the European Committee for Standardization (CEN). Its full title is "Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)". This standard covers: General requirements concerning the field of application, principle, interfering elements,aparatus, sampling and test report are given in ISO 7627-1. In low concentrations the determination of these elements is very critical.
General requirements concerning the field of application, principle, interfering elements,aparatus, sampling and test report are given in ISO 7627-1. In low concentrations the determination of these elements is very critical.
EN 27627-2:1993 is classified under the following ICS (International Classification for Standards) categories: 77.040.30 - Chemical analysis of metals; 77.160 - Powder metallurgy. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 27627-2:1993 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
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 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)Hartmetalle - Chemische Analyse durch Flammenatomabsorptionsspektrometrie - Teil 2: Bestimmung des Calcium-, Kalium-, Magnesium- und Natriumgehaltes von 0,001 bis 0,02 % (m/m) (ISO 7627-2:1983)Métaux-durs - Analyse chimique par spectrométrie d'absorption atomique dans la flamme - Partie 2: Dosage du calcium, du potassium, du magnésium et du sodium a des teneurs comprises entre 0,001 et 0,02 % (m/m) (ISO 7627-2:1983)Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m) (ISO 7627-2:1983)77.160Metalurgija prahovPowder metallurgy77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 27627-2:1993SIST EN 27627-2:2000en01-december-2000SIST EN 27627-2:2000SLOVENSKI
STANDARD
International Standard 7627/2 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEXI(JIYHAPOJ1HAR OPrAHM3At.&lR t-l0 CTAHAAPTM3AUMM*ORGANlSATiON INTERNATIONALE DE NORMALISATION Hardmetals - Chemical analysis by .flame atomic absorption spectrometry - Part 2: Determination of Calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (mlm) Mhtaux-durs - Analyse chimique par spectrometrie d’absorp tion atomique dans Ia flamme - Partie 2: Dosage du Calcium, du potassium, du magnhium et du sodium & des teneurs comprises entre 0,001 et Cl,02 % lmlm) First edition - 1983-10-15 UDC 669.018.25 : 643.422 Ref. No. ISO 7627/2-1983 (E) Descriptors : hardmetals, Chemical analysis, determination of content, Calcium, potassium, magnesium, sodium, atomic absorption spectrometry. Price based on 2 pages SIST EN 27627-2:2000
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 part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 7627/2 was developed by Technical Committee ISO/TC 119, Powder metallurgy, 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 Printed in Switzerland SIST EN 27627-2:2000
INTERNATIONAL STANDARD ISO 7627/2-1983 (E) Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 2: Determination of Calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (mlm) 1 Scope and field of application This part of ISO 7627 specifies the method to be used for the determination of Calcium, potassium, magnesium and sodium contents of hardmetals within the range 0,001 to 0,02 % (mlm) by flame atomic absorption spectrometry. General requirements concerning the field of application, prin- ciple, interfering elements, apparatus, sampling and test report are given in ISO 7627/1. NOTE - In low concentrations, the determination of these elements is very critical. Every care should be taken to avoid contamination from atmosphere and reagents. 2 Reference ISO 762711, Hardmetals - Chemical analysis b y flame a tomic absorp tion spectrometry - Part 1: General requiremen ts. 3 Reagents 4 Procedure 4.1 Test Portion Weigh, to the nearest 0,001 g, approximately 1 g of the test Sample. Transfer it to a 100 ml polytetrafluorethylene beaker or a beaker of other suitable material. Cover the beaker. 4;2 Dissolution of the test Portion Add 10 ml of water, 5 ml of the hydrofluoric a
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