Lead-free environmentally friendly tin strip type common:
One, tin copper lead-free environmental protection tin:
The main components are: tin 99.3% copper 0.7%
Two, tin copper and silver lead-free environmental protection tin:
Main components:
1, tin 99% copper 0.7% silver 0.3%
2, tin 96.5% copper 0.5% silver 3%
Three, pure tin lead-free environmentally friendly tin:
Main ingredients: tin 99.9%
The above is divided into three kinds of common types according to the composition of lead-free environmental protection tin.
If the use of points:
First, 100PPM following (lead content);
Two, 500PPM below (lead content);