VariousDIN EN ISO 4527 (electroless nickel); replacement for DIN 50966EN ISO 2081: Dezember 2008; Replacement for DIN EN 12329: 2000-09 und DIN 50961 (Zinc)DIN 50962 Zinc-nickel)DIN 50962 (Zinc-iron)DIN 50979 (Zinc)DIN 50979 (Zinc-nickel)DIN 50979 (Zinc-iron)DIN 17611 (anodic oxidisation, anodisation)DIN EN ISO 4527 (autocatalytically deposited nickel-phosphorous alloy coatings, chemical nickel)Leica-Norm, Basis material for surfaces (anodic oxidisation, anodisation)Zeiss-Norm CZN 2203-3 (Anodising)R WN 404 102-5 (Silver)Bosch N67 F 367 02 (anodic oxidisation, anodisation)
Din 50961 Pdf | Added By Users
Designation standards: DIN 50961:2012-04 Note: WITHDRAWN Publication date standards: 1.4.2012 SKU: NS-204085 The number of pages: 8Approximate weight : 24 g (0.05 lbs) Country: German technical standard Category: Technical standards DIN
After alkaline or electrolytic cleaning, pickling to remove surface oxides, and rinsing, the parts are loaded into a barrel, rack, or drum and immersed in the plating solution. Various brightening agents may be added to the solution to add luster, but careful control is needed to ensure a quality product. Post-plating treatments may be used to passivate the zinc surface as well as impart various translucent colors or to extend the life of the coating.
The normal zinc-plated coating is dull gray in color with a matte finish, although whiter, more lustrous coatings can be produced, depending on the process or agents added to the plating bath or through post-treatments. The coating is thin, ranging up to 1 mil (25 µm), restricting zinc-plated parts to very mild (indoor) exposures. ASTM Specification B 633 lists four classes of zinc plating: Fe/Zn 5, Fe/Zn 8, Fe/Zn 12 and Fe/Zn 25. The number indicates the coating thickness in microns (µm). The coating finds application in screws and other light fasteners, light switch plates and other small parts. Materials for use in moderate or severe applications must be chromate conversion coated. The coating is entirely pure zinc, which has a hardness about one-third to one-half that of most steels. 2ff7e9595c