Assertion: solder | /r/HasProperty | alloys of lead and tin
Facets:
Source sentences:
text: The most common solders are alloys of lead and tin, which are very difficult to use with oxidized metals; others are formulated specifically for use with these metals (i.e. steel and aluminum).
text: Solder, the soft metal that’s used to create solder joints, is an alloy of tin and lead.