Thermal conductivity and difference interference fit

[Mr_Curious]

Hello.

Does the thermal conductivity between steel parts vary with increasing interference fit?
For example steel parts with fits H7/p6 and with tighter fits H7/r6 have the sale thermal conductivity?

Can anyone provide guidance here?

 

[LittleInch]

If the two parts are in direct contact with no air gap I can't see any impact on thermal conductivity. Or certainly not one worth worrying about.