Tantalum & Niobium Products_ATTL Advanced Materials Co., Ltd.

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Tantalum & Alloys Niobium & Alloys

Niobium & Alloys

Material Property:

? High melting point
? Corrosion resistance
? Good cold machining performance

Application:

Rods, wire materials are widely used in chemical, electronic, aviation, aerospace and other fields.

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.

Product Specification:

1. 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)

Element	Type 1 (RO4200)	Type 2 (RO4210)	Type 3 (RO4251)	Type 4 (RO4261)
Element	％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

2.Mechanical Property

Type	Tensile strength σb，psi (MPa),≥	Yield Strength， σ0.2,psi (MPa),≥	Elongation δ,％, ≥
Rod, Diameter 0.125in(3.18mm)～2.5in(63.5mm)
Type 1 and Type 2	18000(125)	10500(73)	25
Type 3 and Type 4	28000(195)	18000(125)	20
Wire, Diameter 0.020in(0.508mm)～0.124in(3.14mm)
Type 1 and Type 2	18000(125)	/	20
Type 3 and Type 4	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)

3．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

4．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.