Niobium is a gray metal. Niobium has excellent corrosion resistance, high temperature resistance and superconductivity.
Niobium bar is one of niobium products. Niobium bar is produced from niobium powder by forging and polishing. Niobium bar has forging niobium bar and polishing niobium bar.
Material: RO4200-1, RO4210-2Size: ￠3~￠120mmStandard: As per ASTM B392-98Purity: ≧99.9％　 or　 99.95％

Niobium bar has such properties as: high melting point, low vapor pressure, good cold processing performance, high chemical stability, liquid metal and acid and alkali corrosion resistance, etc.

Niobium bar is widely applied in iron and steel, metallurgy, electron, hard alloy, atomic energy, modern strategic weapons, superconducting technology, scientific research and medical equipment and other fields.

chemistry%
designation	chief component		impurities maximum
	Nb	Fe	Si	Ni	W	Mo	Ti	Ta	O	C	H	N
Nb1	Remainder	0.004	0.003	0.002	0.004	0.004	0.002	0.07	0.01	0.004	0.0012	0.002
Nb2	Remainder	0.005	0.005	0.005	0.01	0.01	0.004	0.1	0.015	0.01	0.0015	0.01

Grade		Tensile strength　 δbpsi (MPa),  ≥	Yield strength　　δ0.2,  psi (MPa), ≥	Elongation in 1"/2" gage length,  ％,  ≥
RO4200-1 RO4210-2	18000 (125)		10500 (73)	25
Special requirements to be agreed on by the supplier and buyer of negotiations