Mg	impurity Max (%)
	Fe	Si	Mn	Al	Ni	Cu	Cl	Fe
≥99.8	0.008	0.029	0.006	0.021	0.001	0.002	0.001	99.8

2 . Niobium powder
Product appearance : Perse powder .
Chemical composition of Niobium powder :

Nb	impurity Max (%)
	Cr	Fe	Mn	Mo	Ti	N	H	Ta	Ni	Cu	Si	W	O	C
≥99.0	0.005	0.01	0.003	0.003	0.003	0.04	0.005	0.20	0.005	0.003	0.005	0.005	0.20	0.05

3 . Vanadium powder
Product appearance : Gray powder .
Chemical composition of Vanadium powder :

V	impurity Max (%)
	Fe	Si	Al	Cr	O	H
≥99.83	0.032	0.004	0.01	0.005	0.10	0.02