Super Alloy Super Invar(tm) is stocked by 11 North American distributors and produced by 6 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 Bar Products by 8 distributors but is also available to a lesser extent in Flat Rolled Products, Forging Products, Tubular Products, Wire Products, and Fasteners.
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Specifications
The following specifications cover Super Alloy Super Invar(tm)
No Specifications.
Property Results
Related Metals:
- Super Invar 32-5
- Invar 32-5
Chemistry Data : [top]
Carbon
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0.05 max |
Cobalt
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Iron
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Balance |
Molybdenum
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0.5 max |
Nickel
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Silicon
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0.15 max |
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Principal Design Features
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A modification of Invar alloy, Super-Invar contains cobalt as a replacement for some of the nickel in this iron-nickel alloy. This modified composition results in a coefficient of thermal expansion that is near zero at moderate temperatures.
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Applications
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Precision measuring devices requiring the maintenance of extreme accuracy and dimensional characteristics with changes in temperature.
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Machinability
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The alloy is machinable by conventional means - basically the same as for Invar alloy. The alloy will produce long stringy chips that must be broken. It is known as "gummy", not hard. Positive feeds and slow speeds are recommended.
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Forming
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This alloy is ductile and may be formed by all conventional means.
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Welding
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The alloy is weldable by conventional methods.
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Cold Working
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Cold working by conventional means works well as the alloy has good ductility.
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Annealing
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Anneal at 1550 F and water quench.
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Physical Data : [top]
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Density (lb / cu. in.)
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0.294
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Specific Gravity
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8.14
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Melting Point (Deg F)
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2650
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Modulus of Elasticity Tension
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22
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Mechanical Data : [top]
Form |
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Sheet |
Condition |
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Annealed |
Temper |
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70 |
Tensile Strength |
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70 |
Yield Strength |
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45 |
Elongation |
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38 |
Rockwell |
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B77 |
Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
