{"id":364339,"date":"2024-10-20T01:50:08","date_gmt":"2024-10-20T01:50:08","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-225572020-2021\/"},"modified":"2024-10-26T02:54:35","modified_gmt":"2024-10-26T02:54:35","slug":"bs-en-iso-225572020-2021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-225572020-2021\/","title":{"rendered":"BS EN ISO 22557:2020 2021"},"content":{"rendered":"
This document specifies a method for determining the resistance of a coating to scratches introduced by a usually hand-held loaded stylus.<\/p>\n
The test can be carried out using a point stylus (method A) or using a disc stylus (method B).<\/p>\n
Both methods are generally applicable and can be used in the field as well as on curved surfaces. Method A can also be applied on small test specimens (minimum dimensions 30 mm \u00d7 50 mm).<\/p>\n
The test can be carried out as a \u201cpass\/fail\u201d test (test requirement I) or as a classification test (test requirement II).<\/p>\n
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2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
8<\/td>\n | 4 Principle 5 Apparatus <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 6 Test specimens 6.1 General requirements 6.2 Film thickness 6.3 Conditioning <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 7 Procedure 7.1 Agreements 7.2 Test conditions 7.3 General test procedure 7.4 Constant test load method (test requirement I \u2013 \u201cpass\/fail\u201d test) 7.5 Varied test load method (test requirement II \u2013 classification test) <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | 7.6 Assessment of the damage <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 8 Precision 8.1 General 8.2 Repeatability limit, r 8.3 Reproducibility limit, R 9 Test report 9.1 Detailed form <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 9.2 Short form <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | Annex A (informative) Details on the interlaboratory comparison for the estimation precision <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Paints and varnishes. Scratch test using a spring-loaded pen<\/b><\/p>\n |