Low coefficient of thermal expansion alloys

Abstract

A low coefficient of thermal expansion high strength alloy and methods of formation thereof, the alloy including: chromium 7 wt. % to 10 wt. %; molybdenum 20 wt. % to 25 wt. %; tungsten 4 wt. % to 7 wt. %; aluminum 0.5 wt. % to 2 wt. %; titanium 0.5 wt. % to 2 wt. %; boron 0.005 wt. % to 0.05 wt. %; niobium ≤3.9 wt. % tantalum ≤3.9 wt. % vanadium 0.1 wt. % to 4 wt. %; niobium, tantalum, and vanadium, in combination 0.1 wt. % to 4 wt. %; silicon <0.5 wt. %; zirconium <0.5 wt. %; hafnium <0.5 wt. %; yttrium <0.5 wt. %; copper <0.1 wt. %; manganese <0.1 wt. %; phosphorus <0.1 wt. %; sulfur <0.1 wt. %; iron <5 wt. %; cobalt ≤15 wt. %; balance nickel, cobalt and nickel, in combination 50 wt. % to 70 wt. %, and aluminum and titanium, in combination ≥1.4 wt. %.

Dependencies are inferred from the claim text.