I am looking for a curve for copper conductivity vs. temperature over the -55°C to +180°C range (covers std. ranges of semiconductors plus NEMA class H insulation in the case of magnetics / motors) but cannot seem to find anything searching on the internet.
I have heard that it depends on the particular copper alloy as well, I'm just looking for "normal" copper found in electrical wire.
Does anyone have a reference that would include this information?
edit: I'm not looking for a linear approximation (the Wikipedia page on conductivity lists copper conductivity and its temperature coefficient at 20°C) but rather a curve.