W1 Tool Steel
(For more information onf W1 Tool steel please reference this link.)
One of the common elements of all steel strikers is a flat area to strike against the flint.
As part of the experimental process I created a striker with a slight curve to the face
The slight curve caused the flint to erode at a much faster rate than I have normally seen.
Sparking pre anealing. PHOTO
Sparking post anealing normalization. PHOTO
Russian composite fire steel and iron body and a welded face http://users.stlcc.edu/mfuller/novgorod/NovgorodMus273strikeAlight.jpg