Corrosion of metals and alloys — Rating method by appearance of rust and stains of atmospheric corrosion for stainless steels
NORMA vydaná dňa 14.3.2022
Označenie normy: ISO 23721:2022
Dátum vydania normy: 14.3.2022
Počet strán: 14
Približná hmotnosť: 42 g (0.09 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: This document specifies a method for evaluating the aesthetic appearance of stainless steels qualitatively by rating rust and stains formed by atmospheric corrosion. The rust and stains on stainless steels formed by atmospheric corrosion are rated by using 10 photographic standards. This method is especially suitable for evaluating the appearance of specimens and structures made of stainless steels under atmosphere exposure.