Refractory Alloys Tantalum 40% Columbium is stocked by 3 North American distributors and produced by 2 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
This material is stocked primarily in Tubular Products by 2 distributors but is also available to a lesser extent in Bar Products, and Flat Rolled Products.
For distributor (small quantity) availability click here
For mill (large volume) production click here
To view all click here
Specifications
The following specifications cover Refractory Alloys Tantalum 40% Columbium
No Specifications.
Property Results
Related Metals:
Chemistry Data : [top]
|
MSO currently has no data available for this grade.
|
|
Principal Design Features
|
|
Also called KBI 40, this alloy contains 40% Niobium, employed primarily in the chemical process equipment industry. It if often employed in lieu of pure tantalum as a more cost effective alternative.
|
|
|
Applications
|
|
Applications for tantalum 40% Columbium is employed in capacitors, filaments and various other high temperature components. The chemical process equipment industry commonly employs tantalum in heat exchangers, heaters, vessels, etc.
|
|
|
Machinability
|
|
Similar in characteristics to pure tantalum, this alloy has a tendency to gall, very similar to pure copper. This can cause welding of tooling to the workpiece if proper procedures are not followed. Heavy roughing cuts with M2 high speed or C2 carbide tooling is recommended. To minimize galling, high speed tooling with generous lubricant flooding is recommended. Speeds of 40-60 fpm are recommended.
|
|
|
Forming
|
|
With fully annealed material, spinning, deep drawing, blanking and punching can easily be performed. The material has a relatively low work hardening rate.
|
|
|
Welding
|
|
This alloy can be fusion and resistance welded successfully. Resistance welding should be performed under water. Fusion welding is most successful when the material to be joined is absolutely clean.
|
|
|
Heat Treatment
|
|
This alloy cannot be hardened by heat treatment.
|
|
|
Annealing
|
|
Recrystallization occurs between 2000 and 2500 F.
|
|
Physical Data : [top]
|
|
|
Density (lb / cu. in.)
|
0.437
|
|
Melting Point (Deg F)
|
4900
|
|
Mean Coeff Thermal Expansion
|
3.9
|
Mechanical Data : [top]
Form |
|
Sheet |
Condition |
|
Annealed |
Temper |
|
70 |
Tensile Strength |
|
40 |
Yield Strength |
|
28 |
Elongation |
|
25 |
Videos :
|
MSO currently has no videos available for this grade.
|
Disclaimer
This information is provided "as is" and Metal Suppliers Online, Inc. makes no warranty of any kind with respect to the subject matter or accuracy of the information contained herein. Metal Suppliers Online, Inc. specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose.
In no event shall Metal Suppliers Online, Inc. be liable for any special, incidental, indirect or consequential damages of any kind or any damages whatsoever resulting from loss of use, data, profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use of the information contained herein.
This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
