EN ISO 4884:2019

Hardmetals - Sampling and testing of powders using sintered test pieces (ISO 4884:2019)

This document specifies procedures for the sampling and testing of powder mixtures for the manufacture of hardmetals, using sintered test pieces. It also covers the preparation of test pieces.

Hartmetalle - Probenahme und Prüfung von Pulvern unter Verwendung von gesinterten Probekörpern (ISO 4884:2019)

Dieses Dokument legt Verfahren zur Probenahme und Prüfung von Pulvermischungen für die Herstellung von Hartmetallen, unter Verwendung von gesinterten Probekörpern fest. Es umfasst auch die Vorbereitung von Probekörpern.

Métaux-durs - Échantillonnage et essais des poudres au moyen d'éprouvettes frittées (ISO 4884:2019)

Le présent document spécifie des modes opératoires d'échantillonnage et d'essai des mélanges de poudres servant à la fabrication des métaux-durs, au moyen d'éprouvettes frittées. Il couvre également la préparation de ces éprouvettes.

Trdine - Vzorčenje in preskušanje kovinskih prahov z uporabo sintranih preskusnih vzorcev (ISO 4884:2019)

Ta dokument določa postopke za vzorčenje in preskušanje praškastih zmesi za izdelavo trdih kovin z uporabo sintranih preskuševancev. Prav tako zajema pripravo preskuševancev.

General Information

• Status: Published
• Publication Date: 15-Oct-2019
• Withdrawal Date: 29-Apr-2020
• ICS: 77.040.10 - Mechanical testing of metals
• ICS: 77.160 - Powder metallurgy
• Technical Committee: CEN/SS M11 - Powder metallurgy
• Drafting Committee: CEN/SS M11 - Powder metallurgy
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 16-Oct-2019
• Completion Date: 16-Oct-2019
• Ref Project: SIST EN ISO 4884:2020 - Hardmetals - Sampling and testing of powders using sintered test pieces (ISO 4884:2019)

Relations

• Replaces: EN 24884:1993 - Hardmetals - Sampling and testing of powders using sintered test pieces (ISO 4884:1978)
• Effective Date: 14-Dec-2016

Overview

EN ISO 4884:2019 is an international standard developed by the International Organization for Standardization (ISO) and adopted by CEN that specifies the procedures for sampling and testing powder mixtures used in the production of hardmetals. This standard focuses on the use of sintered test pieces for evaluating powder characteristics and quality. It systematically describes methods for sampling powders, preparing sintered test pieces, and conducting key mechanical and physical tests to ensure the suitability and performance of hardmetal powders before manufacturing.

This standard supersedes EN 24884:1993 and aligns with ISO's technical directives to provide a harmonized approach to powder metallurgy testing for hardmetals. It is applicable across CEN member countries and is vital for manufacturers, quality control laboratories, and researchers working with powder metallurgy materials.

Key Topics

• Sampling Procedures:
  Sampling must comply with ISO 3954 to guarantee representative samples from powder lots, including provisions for sampling from blended batches.

• Preparation of Test Pieces:
  Test pieces must reflect the powder grade and dimensions specified, sintered simultaneously under controlled conditions to ensure consistency. Preparation follows relevant international standards to maintain integrity during subsequent testing.

• Mechanical and Physical Testing:
  Testing focuses on critical properties including:

  • Transverse rupture strength (ISO 3327)
  • Density measurement (ISO 3369)
  • Hardness testing-Rockwell A scale (ISO 3738-1, ISO 3738-2) and Vickers hardness (ISO 6507 series)
  • Microstructure evaluation (ISO 4499 series) including grain size, porosity, and phase content
  • Fracture toughness determination using Palmqvist toughness test (ISO 28079)

• Test Sequence Considerations:
  Hardness, microstructural, and porosity tests should follow the transverse rupture strength test to maintain sample integrity.

• Optional Chemical Analysis:
  Chemical composition can be analyzed on either the powder sample or the sintered test piece to provide additional quality assurance data.

Applications

EN ISO 4884:2019 plays a critical role in the quality control and research of hardmetal powders used in manufacturing cutting tools, wear-resistant components, and other industrial applications requiring high mechanical strength and durability. It enables manufacturers to:

• Ensure powder homogeneity and consistent quality prior to sintering
• Validate manufacturing processes through reproducible test piece preparation
• Assess mechanical properties critical to product performance such as hardness, fracture toughness, and density
• Identify microstructural defects including porosity and undesired phases that may affect product reliability
• Comply with international regulations and customer requirements by providing standardized testing data

This standard is particularly valuable for powder metallurgy industries, research institutions, and laboratories involved in hardmetal production and materials development.

Related Standards

EN ISO 4884:2019 references and harmonizes with several key international standards, including:

• ISO 3954 - Sampling of powders for powder metallurgy
• ISO 3327 - Determination of transverse rupture strength of hardmetals
• ISO 3369 - Density measurement of sintered materials
• ISO 3738-1 & -2 - Rockwell hardness test for hardmetals
• ISO 6507 series - Vickers hardness testing of metallic materials
• ISO 4499 series - Metallographic determination of hardmetal microstructure
• ISO 28079 - Palmqvist toughness test for fracture toughness determination

By integrating these standards, EN ISO 4884:2019 ensures comprehensive and reliable testing methods aligned with best practices in powder metallurgy and materials science.

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For organizations and professionals involved in powder metallurgy and hardmetal manufacturing, adherence to EN ISO 4884:2019 guarantees accurate sampling, rigorous testing, and enhanced product reliability. This facilitates improved manufacturing efficiency and consistent material performance worldwide.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2020
Nadomešča:
SIST EN 24884:2000
Trdine - Vzorčenje in preskušanje kovinskih prahov z uporabo sintranih
preskusnih vzorcev (ISO 4884:2019)
Hardmetals - Sampling and testing of powders using sintered test pieces (ISO
4884:2019)
Hartmetalle - Probenahme und Prüfung von Pulvern unter Verwendung von gesinterten
Probekörpern (ISO 4884:2019)
Métaux-durs - Échantillonnage et essais des poudres au moyen d'éprouvettes frittées
(ISO 4884:2019)
Ta slovenski standard je istoveten z: EN ISO 4884:2019
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.160 Metalurgija prahov Powder metallurgy
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4884
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 77.160 Supersedes EN 24884:1993
English Version
Hardmetals - Sampling and testing of powders using
sintered test pieces (ISO 4884:2019)
Métaux-durs - Échantillonnage et essais des poudres au Hartmetalle - Probenahme und Prüfung von Pulvern
moyen d'éprouvettes frittées (ISO 4884:2019) unter Verwendung von gesinterten Probekörpern (ISO
4884:2019)
This European Standard was approved by CEN on 4 August 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4884:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 4884:2019) has been prepared by Technical Committee ISO/TC 119 "Powder
metallurgy" in collaboration with CCMC.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 24884:1993.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 4884:2019 has been approved by CEN as EN ISO 4884:2019 without any modification.

INTERNATIONAL ISO
STANDARD 4884
Second edition
2019-09
Hardmetals — Sampling and testing of
powders using sintered test pieces
Métaux-durs — Échantillonnage et essais des poudres au moyen
d'éprouvettes frittées
Reference number
ISO 4884:2019(E)
©
ISO 2019
ISO 4884:2019(E)
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
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Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 4884:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sampling . 2
5 Preparation of test pieces . 2
6 Testing . 2
Bibliography . 4
ISO 4884:2019(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO 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
org
...