• ZEDD = (HSS With 0% Cobalt) (62-65 HRc)
• S100 = M35 (HSS With 5% Cobalt) (63-65 HRc)
• S200 = M42 (HSS With 8% Cobalt) (65-68 HRc)
• S400 = T42 (HSS With 10% Cobalt) (64-67 HRc)
• S400E = M35 with Cryogenic (Ultra Low) Heat Treatment (64-67 HRc)
• S500 = T42 with Cryogenic (Ultra Low) Heat Treatment (65-69 HRc)