Tin Lead Plating

Is it possible to plate a cold-rolled steel part with a minimum 5–7 percent lead content tin plate?


Related Topics:

Q. We have recently received a request to plate a cold-rolled steel part with a minimum 5–7 percent lead content tin plate. My plating vendors have told me they can only do 60/40 tin/lead.
Is this so, or are our platers just not set up to do this type of plate? M.C.

A. Sixty/forty tin/lead plating has been the standard type of solder plate for many years. In fact, I would call it a classic plating bath. But things have changed; with the emphasis of removing lead from our environment, newer tin/lead plating baths are available.

For example, a 90/10 tin/lead plating bath is now commonly available. The 90/10 tin/lead has different properties compared with the 60/40 tin/lead,
however, so if there is no problem with lead content, the 60/40 plate is routinely specified.

To be on the safe side I would go back to the specifier and determine if 5–7 percent lead is a minimum amount or the actual amount required. 

Related Content

California Plating Chapters Host Supplier Showcase

The MFASC Conference will be in Montebello on Sept. 26, and the MFANC Conference will be in San Jose Sept. 28.