Can anyone suggest the alternate material of PA 46+GF30% in terms of Temperature resistivity, thermal conductivity? The application is it will be used in Switch Body Assy with in-built Coupler in Ignition Swicth of Automotive Car.
I don't believe that "Temperature resistivity" is a proper term here. Are you looking for (high) temperature resistance, as in the ability to function at elevated temperatures, or electrical performance at some elevated temperature?
I'd look at glass filled polyesters. You'll have to do your own research. You've not given enough information to make a recommendation.