Invar (UNS K93600) is a metal of a nickel level of 36%, Fe of 63.8% and C of 0.2%. It does not change in length when exposed to temperature variations. It is also cost-effective.
Beryllium copper (BeCu), also known as copper beryllium (CuBe), beryllium bronze and spring copper, is a copper alloywith 0.5—3% beryllium and sometimes other elements.
High mechanical strength and good formability (high mechanical strength and excellent formability of over 1GPa) Higher conductivity than general titanium alloy.
Copper-Ferro Alloy is an alloy of Copper (Cu) and Iron (Fe).Because of much differences between the two elements, Copper and Iron, in their metal properties, eutectic points and specific gravities.