Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 6: Determination of chromium in contents from 0,01 to 2 % (m/m) (ISO 7627-6:1985)

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

Hartmetalle - Chemische Analyse durch Flammenatomabsorptionsspektrometrie - Teil 6: Bestimmung des Chromgehaltes von 0,01 bis 2 % (m/m) (ISO 7627-6:1985)

Métaux-durs - Analyse chimique par spectrométrie d'absorption atomique dans la flamme - Partie 6: Dosage du chrome à des teneurs comprises entre 0,01 et 2 % (m/m) (ISO 7627-6:1985)

La présente partie de l'ISO 7627 spécifie la méthode à utiliser pour le dosage par spectrométrie d'absorption atomique dans la flamme du chrome dans les métaux-durs, à des teneurs comprises entre 0,001 et 2 % (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 6: Determination of chromium in contents from 0,01 to 2 % (m/m) (ISO 7627-6:1985)

General Information

Status
Published
Publication Date
06-Apr-1993
Withdrawal Date
30-Oct-1993
ICS
77.040.30 - Chemical analysis of metals
 
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
01-Oct-1997
Completion Date
01-Oct-1997
Ref Project
SIST EN 27627-6:2000 - Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 6: Determination of chromium in contents from 0,01 to 2 % (m/m) (ISO 7627-6:1985)

Overview

EN 27627-6:1993 is a European standard developed by CEN that specifies a precise method for the chemical analysis of hardmetals. This part of the standard focuses on the determination of chromium content, ranging from 0.01% to 2% by mass (m/m), using flame atomic absorption spectrometry (FAAS). The procedure is aligned with ISO 7627-6:1985, ensuring international compatibility and consistency in measurements. The standard also references ISO 7627-1 for general requirements on the field of application, sampling, apparatus, and test reports.

This method is crucial for quality control, material characterization, and ensuring compliance in the manufacturing and use of hardmetals, especially in powder metallurgy industries.

Key Topics

  • Scope and Application: Targets chromium analysis in hardmetals between 0.01% and 2% content by mass. Suitable for powder metallurgy contexts and chemical analysis of metals.
  • Principle: Relies on flame atomic absorption spectrometry to measure chromium by analyzing the absorption of specific wavelengths of light by chromium atoms in a flame.
  • Sample Preparation: Requires controlled dissolution of the test portion using potassium pyrosulfate and perchloric acid, followed by dilution with ammonium citrate and addition of hydrogen peroxide. The sample size and preparation details ensure accurate chromium measurement.
  • Calibration: Utilizes high purity chromium stock solutions to prepare calibration curves. Solutions are matched in matrix composition to the test samples to minimize interferences, ensuring reliable quantification.
  • Measurement Parameters: Absorption is measured at a wavelength of 357.9 nm using N2O flame as the oxidant. Instrument sensitivity and dilution volumes depend on chromium concentration ranges.
  • Accuracy and Reporting: Specifies permissible tolerance levels between triplicate measurements and procedures for rounding results. Chromium contents below 0.01% are reported as "<0.01%".
  • Safety: Emphasizes adherence to manufacturer guidelines for flame operation to ensure laboratory safety.

Applications

  • Quality Control in Powder Metallurgy: Ensures hardmetals meet precise chromium content specifications, vital for mechanical properties and durability.
  • Material Certification: Used by laboratories to certify products against national and international standards.
  • Research and Development: Supports metallurgical investigations requiring accurate chromium quantification in complex hardmetal matrices.
  • Industrial Manufacturing: Helps manufacturers monitor and adjust processes to maintain consistent product quality.
  • Environmental and Regulatory Compliance: Provides standardized data for chromium content, assisting with reporting and regulatory adherence.

Related Standards

  • ISO 7627-1: General requirements for chemical analysis of hardmetals using flame atomic absorption spectrometry, covering principles, apparatus, and reporting-provides the foundational framework for Part 6.
  • ISO 7627-7: Details general requirements for flame atomic absorption spectrometry methods related to hardmetals, complementing this Part 6 method.
  • EN 27627 series: Covers broader chemical analysis procedures for hardmetals, including different elements and measurement techniques.
  • ISO standards on atomic absorption spectrometry: Offer guidance for calibration, instrument performance, and safety practices.

By adhering to EN 27627-6:1993, laboratories and industries achieve accurate, reproducible, and internationally recognized chromium analysis in hardmetals via flame atomic absorption spectrometry. This supports enhanced quality assurance and fosters confidence in the metallurgical properties of critical materials.

Frequently Asked Questions

EN 27627-6:1993 is a standard published by the European Committee for Standardization (CEN). Its full title is "Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 6: Determination of chromium in contents from 0,01 to 2 % (m/m) (ISO 7627-6:1985)". This standard covers: General requirements concerning the field of application, principle, interfering elements, apparatus, sampling and test report are given in ISO 7627-1.

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

EN 27627-6:1993 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 27627-6:1993 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 6: Determination of chromium in contents from 0,01 to 2 % (m/m) (ISO 7627-6:1985)Hartmetalle - Chemische Analyse durch Flammenatomabsorptionsspektrometrie - Teil 6: Bestimmung des Chromgehaltes von 0,01 bis 2 % (m/m) (ISO 7627-6:1985)Métaux-durs - Analyse chimique par spectrométrie d'absorption atomique dans la flamme - Partie 6: Dosage du chrome a des teneurs comprises entre 0,01 et 2 % (m/m) (ISO 7627-6:1985)Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 6: Determination of chromium in contents from 0,01 to 2 % (m/m) (ISO 7627-6:1985)77.160Metalurgija prahovPowder metallurgy77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 27627-6:1993SIST EN 27627-6:2000en01-december-2000SIST EN 27627-6:2000SLOVENSKI
STANDARD
International Standard 762716 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEIKI(LLYHAPOAHAR OPTAHM3AWlR IlO CTAHAAPTl’l3ALlWl.ORGANlSATlON INTERNATIONALE DE NORMALlSATlON Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 6 : Determination of chromium in contents from 0,Ol to 2 % (mlm) Aktaux-durs - Analyse chimique par spectromktrie d’absorption atomique dans la flamme - Partie 6 : Dosage du chrome ;i des teneurs comprises entre O,Ol et 2 % Mm) UDC 669.018.25 : 543.422 : 546.76 Ref. No. IS0 7627/6-1985 (E) Descriptors : powder metallurgy, hard metals, chemical analysis, determination of content, chromium, atomic absorption method. Price based on 2 pages First edition - 1985-04-01 SIST EN 27627-6:2000

Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental 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 IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting. International Standard IS0 7627/6 was prepared by Technical Committee ISO/TC 119, Powder metallurgy. 0 International Organization for Standardization, 1985 Printed in Switzerland SIST EN 27627-6:2000

INTERNATIONAL STANDARD IS0 7627/6-1985 (E) Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 6 : Determination of chromium in contents from 0,Ol to 2 % (m/m) 1 Scope and field of application This part of IS0 7627 specifies the method to be used for the determination of the chromium content of hardmetals within the range 0,Ol to 2 % (m/m) by flame atomic absorption spec- trometry. General requirements concerning the field of application, prin- ciple, interfering elements, apparatus, sampling and test report are given in IS0 7627/l. 2 Reference IS0 762711, Hardmetals - Chemical analysis by flame atomic absorption spectrometry - Part 7 : General requirements. 3 Reagents 3.1 Potassium pyrosulfate. 3.2 Perchloric acid, Q 1,54 or 1,67 g/ml. 3.3 Ammonium citrate, solution. Dissolve 100 g of citric acid in 1 500 ml of water and add 400 ml of ammonia solution (Q 0,91 g/ml). 3.4 Hydrogen peroxide, 30 % (m/m). 3.5 High purity stock solution, for calibration purposes, containing 1,000 g of chromium 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, the relevant amount of the test sample
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...