SIST EN ISO 9647:2022

Name: SIST EN ISO 9647:2022 — Steel - Determination of vanadium content - Flame atomic absorption spectrometric method (FAAS) (ISO 9647:2020)
SKU: SIST EN ISO 9647:2022
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Steel - Determination of vanadium content - Flame atomic absorption spectrometric method (FAAS) (ISO 9647:2020)

Название (английский):

Steel - Determination of vanadium content - Flame atomic absorption spectrometric method (FAAS) (ISO 9647:2020)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 23
Дата публикации:: 12 апреля 2022 г.
Издание:: ISO 9647:2020
ICS:: 77.080.01

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Описание (английский):

This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the vanadium content in steel. The method is applicable to vanadium contents between 0,01 % (mass fraction) and 0,80 % (mass fraction), provided that the tungsten content in a 1,0 g test portion is not higher than 1,0 % and/or the titanium content is not higher than 0,5 %.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 9647:2022 specifies a standardized analytical procedure for the determination of vanadium content in steel using the flame atomic absorption spectrometric (FAAS) method. Adopted from ISO 9647:2020, this CEN-endorsed standard covers sample preparation, reagents, instrument setup and measurement, and result expression for vanadium mass fractions from 0.01 % to 0.80 %, with restriction that a 1.0 g test portion contains no more than 1.0 % tungsten and/or 0.5 % titanium.

Key topics and technical requirements

Scope & limits: Applicable range 0.01–0.80 % vanadium (mass fraction); tungsten and titanium limitations to avoid interferences.

Principle: Dissolution of a test portion in hydrochloric, nitric and perchloric acids, addition of an aluminium chloride spectrochemical buffer, nebulisation into an acetylene/nitrous oxide flame and measurement of atomic absorption at 318.4 nm using a vanadium hollow‑cathode lamp.

Reagents & standards: Analytical-grade reagents and grade 2 water (ISO 3696). Procedures given for preparing vanadium standard solutions (e.g., 2.0 g/l and a 0.08 g/l working solution).

Apparatus: Class A volumetric glassware (ISO 648/ISO 1042) and an atomic absorption spectrometer meeting instrumental criteria (precision, limit of detection, calibration linearity and characteristic concentration) as described in Annex C.

Procedure & calibration: Test portion selection, blank determinations, preparation of calibration solutions, instrument adjustment, and spectrometric measurements. Results may be obtained via a calibration curve or a bracketing method.

Safety & quality: Explicit warning on perchloric acid hazards and guidance for laboratory practice and sampling (ISO 14284 referenced). Precision data and interlaboratory information are provided in informative annexes.

Applications and who uses it

Quality control in steel production: Routine monitoring of vanadium additions in alloy steels and tool steels.

Metallurgical and materials testing laboratories: Accurate determination of V content for certification, acceptance testing and batch control.

Standards bodies and conformity assessment: Comparative testing, method validation and regulatory compliance.

Researchers and metallurgists: Alloy development and failure analysis where vanadium concentration impacts properties.

Keywords: EN ISO 9647:2022, vanadium in steel, FAAS, flame atomic absorption spectrometric method, vanadium content determination, steel analysis, chemical analysis of steel.

SIST EN ISO 9647:2022

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

ISO 9647:2020

Steel — Determination of vanadium content — Flame atomic absorption spectrometric method (FAAS)

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

ISO 6487:2015/Amd 1:2017

Road vehicles — Measurement techniques in impact tests — Instrumentation — Amendment 1

ISO 10426-1:2009/Cor 2:2012

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SIST EN ISO 14284:2023

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