I'm a carbon junkie when it comes to kitchen knives, razors as well... I'm collecting knives from different makers and different carbon steel recipes for a test. In the circles I run in, to call it stainLESS it must have 12% chromium in the mix. That doesn't mean it will not rust or corrode (sp) just that it will happen "Less" than a steel without it. Many steels have resistant qualities that are unbelievable (AS steel for one, my favorite steel ). Takeda uses AS steel in many of his knives and the blanks he suplies to Livi for his razors. This steel is hard and very resistant, I don't know what rockwell the razors are heat treated to but many of my AS kitchen knives are rated at 64RC. This stuff will polish up to a mirror and keep it, you can even hear your stones cry when you start working it though

Ooops got off on a tangent I'm interested in finding out what all steels are used in razors (by recipe) so I can compare their prefomance to known kitchen knives of the same steel. I'll have to look into these steels mentioned here and see whats what