ISO INTERNATIONAL STANDARD 6769 First edition 2022-10 Vitreous and porcelain enamels Determination of surface scratch hardness according to the Mohs scale Emaux vitrifies - Determination de la dureté superficielle suivant I'échelle de Mohs Reference number IS0 6769:2022(E) ISO @IS02022 IS0 6769:2022(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may the internet or an intranet, without prior written permission. Permission can be requested from either Iso at the address below or ISO's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved