Ferrous Metals

______________ Carbon Steels contain 0.55% to 0.9% Carbon in Iron.

___________ Hardening Steels harden to a greater depth when quenched from above the upper critical temperature.

_________ Steels contain elements as well as Carbon deliberately added to Iron to achieve certain properties.

______ Cast Iron contains no free carbon.

_________ Stainless Steels may be hardened by quenching from above the upper critical temperature.

_____ Iron contains 2% or more Carbon in Iron.

1. Steels containing more than 0.55% Carbon in Iron may be hardened by _________ treatment.

_________ Cast Iron contains free carbon in the form of Graphite flakes.

__________ Cast Iron is produced by annealing White Cast Iron.

_______ Steels contain significant amounts of Chromium and/or Nickel with Carbon in Iron.