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ISO 7884-4:1987

Glass — Viscosity and viscometric fixed points — Part 4: Determination of viscosity by beam bending

Nov 26, 1987

General information

90.60     Mar 5, 2026

ISO

ISO/TC 48/SC 7

International Standard

81.040.01  

English  

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Scope

A method of determining the dynamic viscosity of glass on a rod-shaped test specimen, i.e. a beam, supported at its end is specified. The viscous deflection rate of the beam is measured under given load at the midpoint between the supports. In addition the viscosity-temperature relationship and the dependence of the viscosity on the thermal history of the sample can be determined. The theoretical basis relations and the apparatus including method of measurements are described.

Life cycle

NOW

PUBLISHED
ISO 7884-4:1987
90.60 Close of review
Mar 5, 2026

National adoptions

SSH ISO 7884-4:2002  
DPS

Glass — Viscosity and viscometric fixed points — Part 4: Determination of viscosity by beam bending

60.60 Standard published

DPS/KT 129 more