槿树90图文打印
酸黄瓜炒肉Corrosion protection
9
Designation of electroplated coatings as in DIN EN ISO 4042
1)形容强大的成语
g签和l签区别For environmental reasons, the u of cadmium is partially
r estricted.2)Thickness of the chromium layer = 0.3 μm
1)
The thickness specified for the first and cond coating metals apply for all combinations of coatings, with the
小小恶作剧e xception that i
f chromium is the topmost layer it always has a thickness of 0.3 μm.
云南国家税务局
Passivating is ud for zinc, zinc alloy and cadmium coatings. Some colours are only available for zinc coatings.
1)
罗大力Cr(VI)-free passivation is not yet covered by standards. Therefore the coatings must be specially identified and specially o Cr(VI)-free, thin or thick film passivation. See overview on page 89.
Example of designation of a 5 μm zinc-coated, bluish, dull, passivated fastener: A 2 B
