Japanese hatchet and axe heads are normally made with a 3-layer laminated steel head (Warikomi): there is a hard steel insert of carbon steel in the middle for the cutting edge and two softer iron laminations to support it and form the rest of the head. The forest hatchet and the splitting axe are made of unlaminated steel.
AXE GANG HATCHET Cold Steel Knives
Precision Asian Axes : Japanese Axes by Best Made
Axes, adzes, drawknives, nail claws, slicks
Mizuno Seisakujo 450g Japanese Warikomi Axe (360mm Burned Oak
Axes, adzes, drawknives, nail claws, slicks
Higashigata Hatchet Niwaki
Mizuno Carbon Steel Axe 100mm
Japanese Hatchets and Axes
Kanetsune Seki Japan KB-158 Danro White Oak Hatchet Axe