My guess would be most razors use either swedish Steel or Silver Steel with the Silver being the cat's meow with the exception of course with stainless. TI has this new fangled steel they are using in their razors now but since we're talking Dovo I would guess it swedish. I have their Mamouth scale razor which is their top of the line razor and it uses Swedish Steel. I don't know if there are different grades but my feeling is its all the same just different decoration and sizes and grinds and scales and scale materials.