Minimum Technical Quality is 99.97% — Double Melt Tantalum Ingot.

Metallic impurities, %, max
Si	0.0012	Ni	0.0002	Cu	0.0005	Ca	0.001	Na	0.00015
Fe	0.0012	Cr	0.00025	Nb	0.014	W	0.005	C	0.003
Mn	0.00015	Ti	0.0003	Zr	0.0007	Mo	0.0005	N	0.003
Mg	0.0002	Sn	0.0001	Al	0.0005	Co	0.0001	O	0.003
Ag	0.0001	B	0.0001	Cd	0.0001	Ga	0.0003	H	0.0004
As	0.001	Bi	0.0001	In	0.0001	P	0.001	Se	0.0005
Pb	0.0002	Re	0.001	Sb	0.001	V	0.0001	Zn	0.0005
K	0.0001	Li	0.00005	Ti	0.0003	Te	0.0002	S	0.001
Hf	0.003