Hardmetals. Palmqvist toughness test

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-08-2009

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Symbols and units
4 Test pieces and sample preparation
  4.1 Test piece size and sampling
  4.2 Surface preparation
  4.3 Surface condition
5 Apparatus
  5.1 General
  5.2 Indentation
  5.3 Indentation and crack measurement
6 Procedure and conditions of testing
  6.1 Indentations
  6.2 Indentation and crack length measurement
  6.3 Test validity
7 Analysis
  7.1 Vickers hardness
  7.2 Toughness
8 Measurement uncertainty
9 Test report
Annex A (informative) - Report pro forma - Palmqvist
                        toughness measurements on
                        hardmetals
Bibliography

Describes a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method.

This International Standard specifies a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method. This International Standard applies to a measurement of toughness, called Palmqvist toughness, calculated from the total length of cracks emanating from the corners of a Vickers hardness indentation, and it is intended for use with metal-bonded carbides and carbonitrides (normally called hardmetals, cermets or cemented carbides). The test procedures proposed in this International Standard are intended for use at ambient temperatures, but can be extended to higher or lower temperatures by agreement. The test procedures proposed in this International Standard are also intended for use in a normal laboratory-air environment. They are not intended for use in corrosive environments, such as strong acids or seawater.

Committee	W/-
DevelopmentNote	Supersedes 08/30176680 DC. (08/2009) Reviewed and confirmed by BSI, June 2015. (06/2015)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Current
Supersedes	08/30176680 DC : DRAFT AUG 2008

Standards	Relationship
ISO 28079:2009	Identical

ISO 6507-1:2005	Metallic materials Vickers hardness test Part 1: Test method
ISO 3252:1999	Powder metallurgy Vocabulary
ISO 3878:1983	Hardmetals — Vickers hardness test

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BS ISO 28079:2009

Hardmetals. Palmqvist toughness test

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory