And if you're using electrical engineering as well than Steam doesn't become as useful a means for powering your machines. It ends up becoming less useful than it should be and electrical works becomes the primary in many respects. Or competes with gas-powered machines in their respective fields. Steam then becomes terribly niche.

Then congratulations: you got a world set up like the 21st century while still trying to validate 19th century musketry where there are tanks rolling around shooting napalm.

Oh, and Deathclaws.