Formula Er
CAS No. 7440-52-0
Molecular Weight167.26
Appearance Silvery
Stability Stable in the air
DuctibilityGood
Application: Erbium Metal, is mainly metallurgical uses. Added tovanadium, for example, erbium lowers hardness and improves workability. Thereare also a few applications for nuclear industry. Erbium Metal can be furtherprocessed to various shapes of ingots, pieces, wires, foils, slabs, rods, discsand 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