text: Studies have shown that Zn, Pb, Cd, Sn and In can embrittle steel at temperature below each embrittler’s melting point. 
  *Cadmium can embrittle titanium at temperatures below its melting point.
  *Hg can embrittle zinc at temperatures below its melting point.
  *Hg can embrittle copper at temperatures below its melting point.