In Reply to: Re: Steel/Silver corrosion issue posted by JWNewkirk on 07/09/03 at 11:29 AM:
The pins are a generic mild steel, sorry if this is a bit vague but I'm not sure of the alloy. It has a fairly low carbon content.
The corrosion appears on the working surface of the pin and appears as a orange/silver flakes. The flakes sometimes form mushroom shapes. Both can be easilliy removed with gentle scraping.
The material is a hydrofibre which is very similar in appearance to cotton. The silver atoms are ionically bonded to the material prior to the felting process (where the corrosion is observed). Processing conditions are ambient although there are stresses placed on the fibre at some stages. These stages are areas where corrosion is augmented.
I hope this information is of some use.