Refractory Alloys Columbium - Hafnium - Titanium Alloy is stocked by 0 North American distributors and produced by 0 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
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Specifications
The following specifications cover Refractory Alloys Columbium - Hafnium - Titanium Alloy
No Specifications.
Property Results
Related Metals:
Chemistry Data : [top]
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MSO currently has no data available for this grade.
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Principal Design Features
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This alloy of columbium (or niobium)m and hafnium has a commercial tradename designation of C-103. It is one of the columbium base refractory alloys. Also called KBI-3.
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Applications
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Used for rocket structures and heat radiation shields on aerospace and gas turbine applications for temperatures up to 2500 F.
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Machinability
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All of the refractory alloys are difficult to machine. Equipment must be powerful and rigid to prevent tool chatter. The columbium (niobium) alloys such as this one are more readily machined than other refractory alloys. For machining columbium alloy h
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Forming
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Forming may be accomplished with the alloy in the annealed condition. It can be formed by bending, punching or stamping much the same as for plain carbon steel.
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Corrosion Resistance
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This alloy will form a protective oxide in most acids. This oxide will protect it from corrosion. However it is attacked by hydrofluoric acid or by alkaline solutions.
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Welding
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This alloy can be welded by electron beam, resistance welding or gas tungsten-arc welding methods (GTAW). There is some loss of ductility in the weld.
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Heat Treatment
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Not heat treatable for hardness. See "Annealing".
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Forging
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The alloy can be forged at 2200 F down to 1700 F.
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Hot Working
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Hot forming, such as extrusion, may be done at 2200 to 1800 F. Hot rolling, or similar forming, may be done at 800 F.
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Cold Working
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The alloy has good ductility in the annealed condition and may be cold formed by conventional means.
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Annealing
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Anneal at 2000 to 2400 F. A stress relief anneal may be done at 1600 F for one hour.
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Tempering
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Not applicable.
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Hardening
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Hardens by cold working.
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Other Comments
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For use at elevated temperatures in air a protective silicide or aluminide coating should be applied to the parts made from this alloy.
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Physical Data : [top]
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Density (lb / cu. in.)
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0.32
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Specific Gravity
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8.87
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Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
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0.082
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Melting Point (Deg F)
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4260
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Thermal Conductivity
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24.2
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Mean Coeff Thermal Expansion
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4.5
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Modulus of Elasticity Tension
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12.6
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Mechanical Data : [top]
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MSO currently has no data available for this grade.
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Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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