Abstract
The procedure includes examining a small quantity of the sample under the microscope and, if grains of different colours or diameter are present, selecting a few grains of each, placing the selected grains between two glass microscope slides and, whilst applying pressure, slowly moving one slide over the other with a reciprocating motion for 10 s, examining the glass surfaces for scratches. The object of the method is to assess whether the sample has a minimum hardness of 6 on Mohs' scale. Annex A gives information on the international standards series for non-metallic blast-cleaning abrasives ISO 11126 and ISO 11127.
-
Status: WithdrawnPublication date: 1993-12
-
Edition: 1Number of pages: 3
-
Technical Committee: ISO/TC 35/SC 12 Preparation of steel substrates before application of paints and related products
-
- ICS :
- 25.220.10 Surface preparation
Got a question?
Check out our FAQs
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.