Re: source for Type I (silver) cad-plated fasteners

An archive of all the messages posted in the old Fairchild Club Yahoo Group. It is not possible to start a new topic in this forum (please use one of the other forums for new threads), but you can continue to post on existing topics.
Post Reply
Hugh Loewenhardt
Posts: 59
Joined: Wed Aug 06, 2008 6:49 pm

Re: source for Type I (silver) cad-plated fasteners

Post by Hugh Loewenhardt »

'The gold color is a result of a supplementary chromate coating for the Type 2 cadmium plating process in order to increase resistance to corrosion. Refer to ASTM specification B766 for Types 1,2 and 3 cadmium plating. Type 2 plating is an upgrade of the Type 1 bare cadmium which turns a chalky white color over time and exposure. 
Chemical removal of the chromate coating with lye defeats the purpose of the upgraded Type 2 cadmium plating process. 

[Non-text portions of this message have been removed]'
Top
Post Reply

Return to “Yahoo Group Archives”