Name: Niobium and Niobium Alloy Rods & Wire
Brand: Baoji City Changsheng Titanium Co., Ltd.

Niobium and Niobium Alloy Rods & Wire Specifications

Chemical Components

Element	Type 1 (RO4200)	Type 2 (RO4210)	Type 3 (RO4251)	Type 4 (RO4261)
Element	%wt., no more than(Max.)
C	0.01	0.01	0.01	0.01
N	0.01	0.01	0.01	0.01
H	0.0015	0.0015	0.0015	0.0015
O	0.015	0.025	0.015	0.025
Zr	0.02	0.02	0.8～1.2	0.8～1.2
Ta	0.1	0.2	0.1	0.2
Fe	0.005	0.01	0.005	0.01
Si	0.005	0.005	0.005	0.005
W	0.03	0.05	0.03	0.05
Ni	0.005	0.005	0.005	0.005
Mo	0.010	0.010	0.010	0.010
Hf	0.02	0.02	0.02	0.02
Nb	balance	balance	balance	balance

Note 1: The chemical report is the data of casting ingot.

Note 2: We can produce tailored to customers' requirements.

Appending chemical composition of the product requirements (only tested when specified in the contract)

Elements	Type1 (RO4200)	Type2 (RO4210)	Type3 (RO4251)	Type4 (RO4261)
Elements	%wt., no more than(Max.)
O	0.0250	0.0400	0.0250	0.0400
C	0.0100	0.0150	0.0100	0.0150
N	0.0100	0.0100	0.0100	0.0100
H	0.0015	0.0015	0.0015	0.0015

Mechanical Property (annealed condition)

Type	Tensile strength σb psi (MPa) ≥	Yield Strength σ0.2 psi (MPa) ≥	Elongation δ % ≥
Rod, Diameter 0.125in(3.18mm) ~ 2.5in(63.5mm)
RO4200 and RO4210	18000(125)	10500(73)	25
RO4251 and RO4261	28000(195)	18000(125)	20
Wire, Diameter 0.020in(0.508mm) ~ 0.124in(3.14mm)
RO4200 and RO4210	18000(125)	/	20
RO4251 and RO4261	28000(195)	/	15

Note: diameter ≤0.05 inch (1.27 mm), the range is 10 inches (254 mm),diameter > 0.05 inch (1.27 mm), the distance is 1 inch (25.4 mm) or 2 inches (50.8 mm)

Specification and Tolerance

Diameter in.(mm)	Tolerance of outer diameter in.(mm),±	Tolerance of wall %,±
<1(25.4)	0.004(0.102)	10
1~1.5(25.4~38.1)	0.005(0.127)	10
1.5~2(38.1~50.8)	0.006(0.152)	10
2~2.5(50.8~63.5)	0.007(0.178)	10
2.5~3.5(63.5~88.9)	0.010(0.254)	10

Bending Degree

Diameter in.(mm)	Tolerance in.(mm),±
0.020~0.030(0.51~0.76)	0.00075(0.019)
0.030~0.060(0.76~1.52)	0.001(0.025)
0.060~0.090(1.52~2.29)	0.0015(0.038)
0.090~0.125(2.29~3.18)	0.002(0.051)
0.125~0.187(3.18~4.75)	0.003(0.076)
0.187~0.375(4.75~9.53)	0.004(0.102)
0.375~0.500(9.53~12.7)	0.005(0.127)
0.500~0.625(12.7~15.9)	0.007(0.178)
0.625~0.750(15.9~19.1)	0.008(0.203)
0.750~1.000(19.1~25.4)	0.010(0.254)
1.000~1.500(25.4~38.1)	0.015(0.381)
1.500~2.000(38.1~50.8)	0.020(0.508)
2.000~2.500(50.8~63.5)	0.03(0.762)

Note: machine according to customer's requirements.

Niobium and Niobium Alloy Rods & Wire Application

Niobium and niobium alloy rod and wire are widely used in the fields of chemistry, electronics, aviation and aerospace because of their high melting point, corrosion resistance and good cold working performance.

Niobium and niobium alloy rods are used for the structural materials of aircraft engines, internal components and sheath materials for rocket nozzles, reactor, and a variety of corrosion-resistant parts for resisting the nitric acid, hydrochloric acid or sulfuric acid. Adding zirconium into niobium can significantly improve the oxidation resistance and strength of the material. Niobium and niobium-zirconium alloy wire are extensively used to manufacture high-pressure sodium lamps and electrolytic capacitor anode lead.