ISO 20274:2017
Vitreous and porcelain enamels — Preparation of samples and determination of thermal expansion coefficient
ISO 20274:2017 specifies the procedures for the preparation of enamel samples for measurement of the thermal length change and calculation of the thermal expansion coefficient.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
5 Requirements for the test specimen
6 Preparation of the test specimens
6.1 General
6.2 Production by casting
6.3 Production by drawing out of the melt
6.4 Production by sintering
7 Determination of the thermal expansion coefficient
8 Calculation and indication of the results
9 Test report
Annex A (informative) Metallic casting mould
Annex B (informative) Drawing from the melt
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
5 Requirements for the test specimen
6 Preparation of the test specimens
6.1 General
6.2 Production by casting
6.3 Production by drawing out of the melt
6.4 Production by sintering
7 Determination of the thermal expansion coefficient
8 Calculation and indication of the results
9 Test report
Annex A (informative) Metallic casting mould
Annex B (informative) Drawing from the melt