Application Guide P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie106541404340SteelsStainless SteelsCastIron30040017-4 PHAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-50HRCHRC50-70HRC ≤8D 6520 5220 HP258 >10D 6530 6535 6540 6550 5630 5275 5310 5325 5340 1750 1760 1770 Centering/Countersinking 5190 5315 738 235 700 701 good best WWW.OSGTOOL.COM Illustrated Index/Application Guide 57