60/40 flows readily, has a tiny pasty phase, looks fantastic. Anything else is difficult as well as sometimes impossible to work with. 60/40 stays in a liquid phase much longer, providing you even more time to generate smooth solder joints. Sold in 1lb. spindle.
60/40 blend stays in a liquid stage longer, giving you more time to produce smooth solder seams
Convenient 1 lb spool
60/40 flows readily, has a small pasty phase, looks great