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Niobium Hafnium Alloy (C103)
Niobium-hafnium alloy C103 is first manufactured in America in 1965, and then used in nozzle extended segment of Apollo manned lunar module rocket engine.
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+44 7384 866919

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Niobium C-103 Application

Niobium alloy C-103 is an excellent material for liquid rocket thruster nozzles, lightweight propulsion systems and rocket engine thrust chamber in aerospace industry. Niobium alloy 

C-103 is also used in the manufacture of turbopump and high-temperature jet engine parts. 

It is obvious that niobium alloy C-103 is an ideal material in space engineering fabrication.


Niobium C-103 Fabrication Process

Niobium alloy C-103 has high melting point. Fabrication process involves C-103 ingots production process and mechanical process. Niobium hafnium alloy is processed into ingots by combining electron-beam cast with vacuum consumable electrode arc furnace. Then C-103 is extruded or forged over 1200℃. After rolling and drawing under 500℃, niobium hafnium alloy C-103 is manufactured into sheets, strips, rods, wire or other fittings.


Niobium C-103 Welding

Niobium alloy C-103 has good weldability. The welding methods include argon tungsten-arc welding and electron-beam fusion welding. Welding quality depends on the purity of argon and vacuum. The purer the argon and the lower remaining pressure is, the better the welding quality 

will be.


C-103 Chemical Composition Maximum Weight % (Except Where Otherwise Specified)
ProductsCONHHfTiZrWTa
C-1030.0150.0250.010.00159 - 110.7 - 1.30.70.50.500
C-103 Physical Properties
ProductsComposition

Density

/g·cm-3

Temperature

/˚C

Coefficient of Line-expansion

/10-6K-1

Recrystallization Temperature

/˚C

Anneal Temperature

/˚C

Elongation Brittle Transition Temperature

/˚C

C-103Nb-10Hf-1Ti-0.7Zr-0.1W-0.1Mo-0.05Ta8.8623494.5 (1203˚C)1038 - 1316871- 196
Niobium Alloys C-103 Foil, Sheet, Strip and Plate Mechanical Property

Ultimate Tensile Strength, Min, Psi (MPa)Yield Strength(0.2 % offset), Min,Psi (MPa)Elongation In 1 In.(25 mm) Gage Length, Min, %
Material 0.05 in. (1.3 mm) and thinner:
Room temperature56 000 (385)40 000 (275)20
2000 ± 25°F
(1100 ± 15°C)
21 000 (145)16 000 (110)20
Material greater than 0.05 in. (1.3 mm) in thickness:
Room temperature54 000 (370)38 000 (260)20
2000 ± 25°F
(1100 ± 15°C)
21 000 (145)16 000 (110)20
Niobium Alloys C-103 Rod Bar and Wire Mechanical Property

Ultimate Tensile Strength, Min, Psi (MPa)Yield Strength(0.2 % offset), Min,Psi (MPa)Elongation In 1 In.(25 mm) Gage Length, Min, %
Material 0.050 in. (1.27 mm) and smaller in diameter:
Room temperature56 000 (385)40 000 (275)20
2000 ± 25°F
(1100 ± 15°C)
21 000 (145)16 000 (110)20
Material 0.051 in. (1.30 mm) and larger in diameter:
Room temperature54 000 (370)38 000 (260)20
2000 ± 25°F
(1100 ± 15°C)
21 000 (145)16 000 (110)20
C-103 High-temperature Properties
ProductsCompositionShapeTemperature/˚CTensile Strength/MPaTemperature/˚CModulus of ElasticityBreak Strength/MPa
C-10310Hf, 1Ti, 0.7ZrSheet1093189.8-112 490-