ISO 9385:1990
Glass and glass-ceramics; Knoop hardness test

Standard No.

ISO 9385:1990

Release Date

1990

Published By

International Organization for Standardization (ISO)

Latest

ISO 9385:1990

Scope

This International Standard describes the method of test for determining the Knoop hardness number of glass and glass-ceramics. The Knoop hardness number characterizes the be-haviour of glass and glass-ceramics concerning a permanent change of the surface after indentation with a solid material.

ISO 9385:1990 history

• 1990 ISO 9385:1990 Glass and glass-ceramics; Knoop hardness test