nYes, the fixed support affects the deformation under a thermal condition.nThere is zero deformation at 20C because that is the reference temperature. There is only deformation at -35C, that is expected.nIf the CTE is a constant value, in other words, it is not temperature dependent, then you just need that one value and it is used for all temperatures. Most metals have an almost constant value of CTE between 20 C and -35 C.n