1. Note the related particular Fe Ni alloy Invar which exhibits minimum thermal expansion. 2. The backplane assembly is made of graphite composite, invar , and titanium. 3. An Invar piston can be cast and machined, just like an aluminum piston. 4. The same electronic structure transition is believed to be a causal factor in Invar behaviour. 5. *An Invar piston is an economical choice to avoid steam leaks and cylinder wear. 6. The Invar alloy is not intrinsically expensive; only low demand makes the price high. 7. Guillaume is known for his discovery of nickel-steel alloys he named invar and elinvar. 8. The Invar enables the tank to hit targets at twice the range of the 125mm shells. 9. Instrument screw shafts are generally made of Invar , to prevent temperature from changing tolerances too much. 10. In 1896 Charles �douard Guillaume discovered the nickel based alloy "'Invar " '.
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