Hardox axe head

[Danny B]

It will depend on what thickness you want as harder grades don't come in sheets as thin as lower values; eg Hardox 500's minimum stock thickness is 4mm, where as Hardox 400 goes down to 2mm.

Hardox 400 will do you just fine. If you can get 500, 600 or Extreme then you are on a roll.

Excellent. I've tracked down a tasty-looking 12mm thick offcut of 500, that should be ample thickness and virtually unbreakable. Shapewise, it's probably going to resemble an old-fashioned tomahawk.