NORME EUROPEENNE
July 1991
U0C666.635:691.443-41-033.6:620.178,143.3
hardness tests.scratch hardness tests
English version
Ceramic tiles Determination of scratch hardness
Carreaux et dalles ceramiquessuperficielle suivant 1'echelle de Mohs
Bestimmung der Ritzharte der
This European Standard was approved by CEN on 1991-07-17
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditians for giving this European Standard the status of a national standard without any alteration. any CEN member.CEN w101:1991
FOREWORD which is held by UNI. This European Standard was adopted by CEN on the countries: Munich on 11 and 12 May 1982 It was deelded to considar Beigium Denmark France Greece Icelan Italy
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