C_B C_Co C_Cr C-_Cu Fe_C ....Fe_0.2%C ....Fe_5%C ....Fe_25%C ....Fe_40%C Fe_.04wt%C ....Fe_1wt%C ....Fe_7wt%C ....Fe_10wt%C ....Fe_12wt%C C_Mn C_Mo C_Nb C_Ni C_Pb C_Ti C_V C_W
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