it is also true that in many cases, engineers have worked around problems like these by using ceramic components, which have a much lower coefficient of size/density reaction to especially higher temperatures. mechanically, with tight tolerances and precise forming, such devices can have components made out of ceramics to eliminate this problem, and additionally, reduce the amount of effort that needs to be made to control the tolerance of a device that spends much of its life idle, by buffering the thermal transfer into the internal workings.

in many cases, the strain that a ceramic part can tolerate without fracture is comparable to a metallic part, and many designs have switched to using ceramic parts for these components, but it's not a silver bullet because if the device vibrates a lot, momentary force can exceed the breaking strength of the material and render any advantages of temperature tolerance moot.

also, different metals have different thermal conductivity and coefficients of expansion, and sometimes just switching from steel to a different alloy with nickel, chromium, or other metals (eg vanadium, molybdenum) can solve such issues of thermal expansion, and for example titanium has a lot of advantage over steel in some applications because it has a lower coefficient of expansion and a higher elasticity of even the most carefully tempered steel part, with the additional advantage of being corrosion resistant and having a higher melting point.

for similar reasons sometimes it is more effective to switch out steel for aluminium for a part, because weight and thermal conductivity are advantageous, aluminium is a bit like a poor-man's silver in this respect, to the point where it has been substituted, stupidly, by some telecomms companies for copper (due to the cost) resulting in wiring that catastrophically fails with age because aluminium is much easire to oxidise, once it faces any kind of mechanical stress or friction, and once the oxides start to form channels into the metal their conductivity properties fail and start to switch to being capacitative, or even resistive.