I'm new to straight razors. I have bought several and am learning to use them.

I'm curious about the blades. Does anyone know what type of steel was used in the Sheffield blades like Wade & Butcher, the Solingens like Dubll Duck, the Wonderedge, etc? I wondering what grade/type of steel was used? I know some are carbon or alloy steels and some are stainless steels.

I have a Wonderedge that it almost looks like the blade was plated. It has a couple of areas that look like a thin blade coating/plating is flaking off.

Were any of the blades coated or plated or are they just polished steel?

Any help will be appreciated!

Thanks,
John