Refine Your Search

Search Results

Technical Paper

Development of Automotive Body Solders

2001-10-16
2001-01-3080
Lead (Pb) based solders had been used successfully as dent and seam fillers for automotive body panels and were commonly referred to as “body solders”. The usual compositions were 70wt% Pb - 30wt% Sn or 80wt% Pb - 20wt% Sn. But due to the hazards associated with Pb dust and particles from the grinding and sanding, new lead-free body solders were developed in the early 80's. An 82wt%Sn - 15wt%Cu - 3wt%Zn composition was developed to mimic the pasty characteristics and processability of the lead-containing solders. This body solder has the advantages of corrosion resistance, compatibility with e-coat, and a lower processing temperature and lower material cost than an alternative candidate approach that uses a silicon bronze material. The ideal temperature range for applying this solder is between 280 to 350°C, which provides a workable, viscous material.
X