View attachment 1263177
View attachment 1263183Looks like a common Rockwell, doesn't it? But this is a surface hardened version. The normal Rockwell 6S is made from 316l stainless steel which is a rather soft material with a hardness of HV 221. The surface now has a hardness of approximately HV 1200. The difference is astonishing:
Sounds bad-a ready for wartime deployment!No, this was a black PVD coated 6S that was sandblasted and then sent to Bodycote to process what they call Kolsterisation, technically bringing carbon into the steel into a soecial gas mix.
It had to be refurbished because the PVD rubbed off.
There had been some issues with the PVD so a search for the most durable solution began while not altering the measurements, so here it is. I have known this process before. German watchmakers like Sinn, DEKLA, Archimede are using it to harden their watch cases. I personally own one of these watches and after some years of hard work it looks like brand new. The colour of the steel gets a little bit darker. Even if I would like to apply a coating like DLC it is perfectly possible because there's no egg shell effect any more. Meaning that parts of the coating will crack because the weak steel reacts in another way than the hard coating e. G. When it falls on the floor.WOW!
Seems like your great, great, great, great, great grandkids will be using this razor!!
The 6S is a lifetime razor for me. I'll always have it in my den, along with my ATT Windsor and Karve brass & aluminium.
View attachment 1263177
View attachment 1263183Looks like a common Rockwell, doesn't it? But this is a surface hardened version. The normal Rockwell 6S is made from 316l stainless steel which is a rather soft material with a hardness of HV 221. The surface now has a hardness of approximately HV 1200. The difference is astonishing:
No, this was a black PVD coated 6S that was sandblasted and then sent to Bodycote to process what they call Kolsterisation, technically bringing carbon into the steel into a soecial gas mix.
It had to be refurbished because the PVD rubbed off.
Nuke shave now!Yikes! Now you are ready for a nuclear war!!
I am quite sure it will ;-)But will it withstand a direct strike from falling Chinese Rocket debris?
It is only surface hardened, so it is not brittle at all.Wondering how brittle hardened 316l is?
Bodycote is advertising that kolserised steel is even more rust proof.Wouldn't adding carbon make it more rust prone?