Yes they have made all steel houses. Right after WWII they did. There was a
company called Ludstrom (I believe this is the correct name of the company or
something similar to it) who made them.

The porcelain steel houses were tradenamed LUSTRON and made by US Steel for
several years after WW II. There is one in our neighborhood about 2 blocks away
and after more than 50 years it is still looking good. Amazing...

Joe