It certainly roughly resembles a modern welder's hammer, used for chipping the slag off after a weld, so could well be an older blacksmith tool.
Although concentrated on N. America this site is very good for photographs, information and how to spot fakes and is well worth a look. It shows axes going back to the 1700's. There are pipe tomahawks as well but the trade axe pages are very good.
https://www.furtradetomahawks.com
David R. I remember the previous thread on your axe - amazing that you still used it and it took an edge after a century or two! I guess that confirms the steel bit insert with the rest iron. Is it just the photograph or does the darker colour at the blade edge indicate the steel section?
Axes are often faked using modern ones as a base. There are lots of fire axes out there masquerading as naval boarding axes! That's why I think the post 1900 catalogues that Interested Party posted are useful and Fernando was right to allow them.
Regards CC