The best part of that comparison is that solder might not even melt on Venus at that temperature. The atmospheric pressure on the surface is roughly 90 atm which is the pressure you'd experience if you were 1,000 meters underwater. Even modern nuclear attack submarines made out of titanium and high strength alloys can barely go past 800 meters without completely losing structural integrity so solder would probably be under way too much pressure to change phase from solid to liquid.