johniet,
All production of the LEVER-LOCK is planned to be 420HC. We are pleased with the performance we get from this steel, when properly heat treated, for the 'dollar'. At Rc 57, it holds and edge reasonably well, is VERY corrosion resistant, and is easy to resharpen, and a cost that more people can enjoy. If there are any changes in the steel down the road, I will spread the word from here first.
Thanks for your interest!
------------------
Stay Sharp!
Will Fennell
Camillus Cutlery