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BS EN ISO 4499-2:2010

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Hardmetals. Metallographic determination of microstructure Measurement of WC grain size
Superseded date

08-12-2020

Published date

06-30-2010

Foreword
1 Scope
2 Normative references
3 Terms, definitions, abbreviations, symbols and units
4 General information
5 Apparatus
6 Calibration
7 Grain-size measurement by the linear-intercept method
8 Reporting
Annex A (informative) - Measurement case study
Annex B (informative) - Report proforma
Bibliography

Provides guidelines for the measurement of hardmetal grain size by metallographic techniques only using optical or electron microscopy.

This part of ISO 4499 gives guidelines for the measurement of hardmetal grain size by metallographic techniques only using optical or electron microscopy. It is intended for sintered WC/Co hardmetals (also called cemented carbides or cermets) containing primarily WC as the hard phase. It is also intended for measuring the grain size and distribution by the linear-intercept technique.

This part of ISO 4499 essentially covers four main topics:

  • calibration of microscopes, to underpin the accuracy of measurements;

  • linear analysis techniques, to acquire sufficient statistically meaningful data;

  • analysis methods, to calculate representative average values;

  • reporting, to comply with modern quality requirements.

The part of ISO 4499 is supported by a measurement case study to illustrate the recommended techniques (see Annex A).

The part of ISO 4499 is not intended for the following.

  • Measurements of size distribution.

  • Recommendations on shape measurements. Further research is needed before recommendations for shape measurement can be given.

Measurements of coercivity are sometimes used for grain-size measurement, but this current guide is concerned only with a metallographic measurement method. It is also written for sintered hardmetals and not for characterising powders. However, the method could, in principle, be used for measuring the average size of powders that are suitably mounted and sectioned.

Committee
W/-
DevelopmentNote
Together with BS EN ISO 4499-1, it supersedes BS EN 24499. Supersedes 06/30144293 DC. (06/2010)
DocumentType
Standard
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 4499-2:2008 Identical
EN ISO 4499-2:2010 Identical

ISO 4499-1:2008 Hardmetals Metallographic determination of microstructure Part 1: Photomicrographs and description
ISO 4489:1978 Sintered hardmetals Sampling and testing
ISO 4505:1978 Hardmetals Metallographic determination of porosity and uncombined carbon
ISO 4499:1978 Hardmetals Metallographic determination of microstructure
ISO 3326:2013 Hardmetals Determination of (the magnetization) coercivity
DD ENV 623-3:1993 Advanced technical ceramics. Monolithic ceramics. General and textural properties Determination of grain size
ISO 3369:2006 Impermeable sintered metal materials and hardmetals Determination of density
ISO 3738-1:1982 Hardmetals — Rockwell hardness test (scale A) — Part 1: Test method
ISO 3738-2:1988 Hardmetals — Rockwell hardness test (scale A) — Part 2: Preparation and calibration of standard test blocks
ISO 3878:1983 Hardmetals — Vickers hardness test

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