Carbide Substrate Substrate of all solid end mills is carbide. Workpiece Material Steel Heat Treated Steel Aluminum & Stainless Titanium Heat-resistant Cast Iron Non-ferrous ~30HRC ~40HRC ~55HRC ~68HRC Steel Alloys Alloys Metals Description Ref. to Page 2FESS L10 2FESM 2FESL L11 2FEKS L12 0 O O 0 O O 2FEKM 4FESM L13 4FEKM 2FESW 3FESW L14 4FESW 0 0 O 0 O 0 O 3UFSM L15 4PGSS 5PGSS 4PGSM 0 0 O O 5PGSM L16 6PGSM 4PGSL 5PGSL 6PGSL 0 0 O O 4PGRM L17 0 O 0 O O O 3ZFKS L19 3ZFKM 0 O O O O O O 4MFK L21 L 4MFR 0 0 0 0 O O 4TFK L23 4TFR 4YEKM 0 0 0 0 0 O 4YECM L24 Solid End Mill 4YERM 0 0 0 0 0 O 5DEKM 5DERM L25 0 0 0 0 0 O 4YFSM 6YFSM 3RDSM 4RDSM 0 0 O 0 5RDSM L26 3RDSL 4RDSL 5RDSL O 0 0 O O 0 O O 4RFSM 6RFSM L27 O 0 0 O O 0 O O 3RFRS 4RFRS 0 O O 0 0 O O 6PFK L29 8PFK 0 0 0 O O O 2SEB L31 0 0 0 2UEBS L32 0 0 O O 0 O 3UEBS 0 O 0 0 O O 4YEBM L33 0 0 0 0 6PDRS L34 0 0 O O 0 4JER L37 0:1st Choice O:2nd Choice L3