Erbium Metal,

Formula Er
CAS No. 7440-52-0
Molecular Weight 167.26
Appearance Silvery
Stability Stable in the air
Ductibility Good
Application: Erbium Metal, is mainly metallurgical uses. Added to vanadium, for example, erbium lowers hardness and improves workability. There are also a few applications for nuclear industry. Erbium Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder

Er/TREM (% min. )	99.99	99.99	99.9	99
TREM (% min. )	99.9	99.5	99	99
Rare Earth Impurities ( in TREM, % max. )
Eu Gd Tb Dy Ho Tm Yb Lu Y	0.001 0.001 0.001 0.003 0.005 0.005 0.001 0.001 0.003	0.001 0.001 0.001 0.003 0.005 0.005 0.001 0.001 0.003	0.001 0.001 0.001 0.01 0.005 0.001 0.001 0.001 0.03	Totally 1.0
Non-Rare Earth Impurities ( % max. )
Fe Si Ca Al Mg W Ta O C Cl	0.01 0.005 0.005 0.005 0.005 0.05 0.0005 0.015 0.005 0.005	0.1 0.01 0.05 0.01 0.01 0.05 0.01 0.15 0.01 0.01	0.15 0.01 0.05 0.01 0.01 0.05 0.01 0.15 0.01 0.01	0.15 0.01 0.05 0.01 0.01 0.05 0.05 0.2 0.03 0.02