As already stated correctly, the blade is Rc 56, and that is the hardest metal in it. As for the steel composition, copied from the website already listed above:
"For both blades we use chrome molydenum stainless steel with 0.52% carbon, 15% chromium, 0.5% molydenum, 0.45% manganese and 0.6% silicium. After a sophisticated hardening process at 1040°C and an annealing temperature of 160°C the blades achieve a hardness of RC 56.
The woodsaw, scissors and nail files have a hardness of RC 53, the screwdriver, tin opener and awl a hardness of RC 52, and the corkscrew and springs RC 49.
The metal saw and file, in addition to the special case hardening, are also subjected to a hard chromium plating process so that iron and steel can also be filed und cut."
HTH...
[This message has been edited by Outlaw_Dogboy (edited 19 March 1999).]