Refractory metal

Refractory metals refer to high-melting, base metals of the 4th to 6th subgroup, which are corrosion-resistant under standard conditions.

22Ti
Titaniumsilvery grey-white metallic
23V
Vanadiumblue-silver-grey metal
24Cr
Chromiumsilvery metallic
40Zr
Zirconiumsilvery white
41Nb
Niobiumgray metallic, bluish when oxidized
42Mo
Molybdenumgray metallic
72Hf
Hafniumsteel gray
73Ta
Tantalumgray blue
74W
Tungstengrayish white, lustrous