ISO 4503:1978 PDF

Name: ISO 4503:1978 — Hardmetals — Determination of contents of metallic elements by X-ray fluorescence — Fusion method
SKU: ISO 4503:1978
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Hardmetals — Determination of contents of metallic elements by X-ray fluorescence — Fusion method

Название (английский):

ISO 4503:1978

Hardmetals — Determination of contents of metallic elements by X-ray fluorescence — Fusion method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 3
Дата публикации:: 1 июня 1978 г.
Издание:: ISO IS 4503 edition 1 version 1
ICS:: 77.160

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Описание (английский):

Specifies methods for the determination of the presence, type, and distribution of porosity and uncombined carbon in hardmetals, furthermore apparatus, preparation of test pieces, procedure and test report. Figures show the types of apparent porosity and uncombined carbon.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 4503:1978 is an international standard developed by the International Organization for Standardization (ISO) that specifies a precise method for determining the content of metallic elements in hardmetals using X-ray fluorescence (XRF) with a fusion preparation technique. Hardmetals, also known as cemented carbides, are composite materials widely used for cutting tools, wear-resistant parts, and other industrial applications due to their hardness and toughness. This standard is essential for accurate chemical analysis of elements such as cobalt, chromium, iron, manganese, molybdenum, nickel, niobium, tantalum, titanium, tungsten, vanadium, and zirconium in these materials.

Key Topics

Scope and Purpose The standard applies to carbides of niobium, tantalum, titanium, vanadium, tungsten, and zirconium, their mixtures, and binder metals in hardmetals. It defines methods for sample preparation, including dissolution or oxidation, fusion with a borate flux, and instrumental measurement by X-ray fluorescence.

Sample Preparation Preparation involves weighing the sample, dissolving or oxidizing it, and fusing with sodium tetraborate and barium peroxide or carbonate to form a homogenous glass-like disk. This preparation reduces particle size effects and improves measurement reproducibility.

Apparatus and Reagents The procedure requires XRF spectrometers with optimized parameters, platinum capsules for fusion, heating devices capable of 700–1100 °C, and high-purity reagents such as sodium tetraborate, barium peroxide, and acids including hydrofluoric, nitric, and sulfuric acids.

Analytical Procedure The XRF method measures the characteristic X-ray intensities of the metallic elements after fusion. Calibration curves are constructed using synthetic standards designed to match the composition ranges of hardmetals. The standard specifies the analytical lines and correction techniques necessary for accurate quantification.

Accuracy and Reporting The document states tolerance levels for repeatability and reproducibility, ensuring confidence in results. It also provides guidelines for summarizing findings in a report, including method references, sample details, results, and any deviations or incidents during analysis.

Applications

Quality Control in Hardmetal Manufacturing ISO 4503:1978 is integral for manufacturers to analyze cobalt and carbide phases to maintain strict compositional standards, ensuring product performance for tooling and wear resistance.

Material Certification and Compliance Suppliers and laboratories use the method to certify hardmetal materials according to international requirements, supporting trade and regulatory compliance.

Research and Development Accurate elemental analysis facilitates the development of new hardmetal grades and composites by providing reliable compositional data to optimize properties.

Failure Analysis and Forensics Understanding elemental distributions aids in diagnosing material failures, refining production processes, and improving material longevity.

Related Standards

ISO/TC 119 - Powder Metallurgy Standards ISO 4503 is part of a broader set of standards on powder metallurgy, addressing compositional analysis and quality verification of powder metallurgical products.

ISO 842 - Hardmetals - Metallographic Determination of Metal and Carbide Phases Complements chemical analysis by providing microstructural characterization methods relevant to hardmetal quality.

ISO 4497 - Rockwell Hardmetals – Hardness Measurement Often used alongside compositional analysis for comprehensive material assessment.

ASTM Standards for Hardmetal Analysis ASTM provides similar analytical methods which may be referenced for industry-specific applications or regional standards comparison.

By adhering to ISO 4503:1978, industries working with hardmetals gain a robust and standardized framework to accurately quantify metallic elements, underpinning product quality, consistency, and performance in demanding applications.

ISO 4503:1978 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

SIST EN 24503:2000

Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method (ISO 4503:1…

SIST EN ISO 8420:2002/AC:2008

Animal and vegetable fats and oils - Determination of content of polar compounds (ISO 8420:2002/Cor 1:2004)

SIST EN ISO 4497:2020

Metallic powders - Determination of particle size by dry sieving (ISO 4497:2020)