בדיל
'bedil' is typically translated as “tin”.
This meaning is somewhat unclear. Bedil is actually the same root word as hebedil, which infers that some kind of metal that requires a separation process. Likewise, contextual evidence indicates a refining process of sorts but seems to imply a process of removing impurities rather than adding elements for alloying. There is nothing here that unambiguously identifies “tin” specifically.
For a thorough examination of various metals in the ancient Hebrew texts and how this ties in with the archaeological record, see metallurgy.
LexID 913