It looks like a good blade steel or stainless .. BUT as we have decussed before....... The blades made for manufacture are left at a lower rc for manufacuring process. It tears the hell out of gringing wheels in production
when the Rockwell is to hi. I cant say that Spydi leave them softer but with the test reports above there should be no problem holding an edge if the heat treat is proper.. ANY COMMENTS ON THIS>>> IVE HEARD THIS 10,000,000,000,000,000,000,000,122 TIMES..AT LAST COUNT on edge holding..hahahah