... available in plate,sheet,rod,bar,wire,tube,pipe,etc. super invar rodSuper Invar is an iron-nickel-cobalt alloy that ... structural components for supports and substrates in optical and laser systems requiring precision measurements.Nominal Compositions:CMnSiNiCoFeMax. 0.020.350.20325 ... .5Balanceavailable in plate,sheet,rod,bar,wire,tube,pipe,etc. super invar rod