Machining data for Drilling with Xtratec INSERT DRILL WALTER Dc 0 531 2 250 inches Material group Cutting data for wet machining Dry machining is

Machining data for Drilling with Xtratec INSERT DRILL WALTER Dc 0.531 2.250 inches Material group Cutting data for wet machining Dry machining is possible Structure of main material groups and identification letters Brinnel-hardness HB Tensile strength N/mm2 Cutting group1 3 Insert geometry Starting value for feed f in/rev Size -1 0.531 -0.625 Size -2 0.656 -0.781 A Size -3 Dc 0.812 -0.937 57 Size -4 nch 0.968 -1.125 Size -5 Size -6 1.171 -1.625 Size -7 Size -8 1.687 -2.250 p Unalloyed steel C < 0.25% annealed 125 428 P1 0.002 0.002 0.002 0.004 0.005 0.005 C > 0.25 < 0.55 % annealed 190 639 P2 0.003 0.004 0.004 0.005 0.007 0.007 C > 0.25 < 0.55 % tempered 210 708 P3 0.003 0.004 0.004 0.005 0.007 0.007 C > 0.55 % annealed 190 639 P4 0.003 0.004 0.004 0.005 0.007 0.007 C > 0.55 % tempered 300 1013 P5 0.003 0.004 0.004 0.005 0.007 0.007 free cutting steel (short-chipping) annealed 220 745 P6 0.003 0.004 0.004 0.005 0.007 0.007 Low-alloyed steel annealed 175 591 P7 0.003 0.004 0.005 0.006 0.008 0.008 tempered 300 1013 P8 0.003 0.004 0.004 0.005 0.006 0.006 tempered 380 1282 P9 0.003 0.004 0.004 0.005 0.006 0.006 tempered 430 1477 P10 0.005 0.002 0.002 0.004 0.005 0.005 High-alloyed steel and high-alloyed tool steel annealed 200 675 P11 0.003 0.004 0.005 0.006 0.007 0.007 hardened and tempered 300 1013 P12 0.003 0.004 0.004 0.005 0.006 0.006 hardened and tempered 400 1361 P13 0.002 0.003 0.004 0.005 0.006 0.006 Stainless steel ferritic / martensitic, annealed 200 675 P14 0.003 0.004 0.004 0.005 0.006 0.006 martensitic, tempered 330 1114 P15 0.002 0.003 0.004 0.005 0.006 0.006 M Stainless steel austenitic, quench hardened 200 675 M1 0.002 0.003 0.003 0.004 0.005 0.006 austenitic, precipitation hardened (PH) 300 1013 M2 0.002 0.003 0.003 0.004 0.005 0.006 austenitic / ferritic, duplex 230 778 M3 0.002 0.003 0.003 0.004 0.005 0.006 K Malleable cast iron ferritic 200 675 K1 0.004 0.005 0.006 0.007 0.009 0.009 pearlitic 260 867 K2 0.003 0.004 0.004 0.006 0.007 0.008 Grey cast iron low tensile strength 180 602 K3 0.004 0.005 0.006 0.007 0.009 0.009 high tensile strength / austenitic 245 825 K4 0.003 0.004 0.005 0.006 0.008 0.008 Cast iron with spheroidal graphite ferritic 155 518 K5 0.004 0.005 0.006 0.007 0.009 0.009 pearlitic 265 885 K6 0.003 0.004 0.005 0.007 0.009 0.009 GGV (CGI) 200 675 K7 0.004 0.005 0.006 0.007 0.009 0.009 N Aluminum wrought alloys cannot be hardened 30 N1 hardenable, hardened 100 343 N2 Cast Aluminum alloys < 12 % Si, cannot be hardened 75 260 N3 < 12 % Si, hardenable, hardened 90 14 31 N4 > 12 % Si, cannot be hardened 130 447 N5 Magnesium alloys 70 250 N6 Copper and copper alloys (bronze / brass) unalloyed, electrolytic copper 100 343 N7 brass, bronze, red brass 90 14 31 N8 Cu-alloys, short-chipping 110 382 N9 high-strength, Ampco 300 1013 N10 0.002 0.003 0.003 0.004 0.005 0.006 S Heat-resistant alloys Fe-based annealed 200 675 S1 hardened 280 943 S2 Ni or Co base annealed 250 839 S3 hardened 350 1177 S4 cast 320 1076 S5 Titanium alloys pure titanium 200 675 S6 a and p alloys, hardened 375 1262 S7 P alloys 10 41 1396 S8 Tungsten alloys 300 1013 S9 0.002 0.002 0.002 0.004 0.004 0.005 Molybdenum alloys 300 1013 S10 0.002 0.002 0.002 0.004 0.004 0.005 H Hardened steel hardened and tempered 50 HRC H1 0.002 0.002 0.002 0.004 0.004 0.004 hardened and tempered 55 HRC H2 0.002 0.002 0.002 0.004 0.004 0.004 hardened and tempered 60 HRC H3 Hardened cast iron hardened and tempered 55 HRC H4 0.002 0.002 0.002 0.004 0.004 0.004 O Thermoplasts without abrasive fillers O1 Thermosetting plastics without abrasive fillers O2 Plastic, glass-fiber reinforced GFRP O3 Plastic, carbon-fiber reinforced CFRP O4 Plastic, aramid fiber reinforced AFRP O5 Graphite (technical) 80 Shore O6 0.004 0.005 0.006 0.007 0.009 0.009 1 The assignment of the machining groups can be found on page °H 8° Recommended application (the specified cutting data should be considered starting values for the recommended application). Alternative application, limited to 2x Dc drills. MMs or compressed air is recommended When using drills with a depth >3xD, the following reductions are recommended >3xD cutting speed vc -20%, feed f 30% when spot drilling, feed f 50% when starting on an inclined surface >4xD cutting speed vc -30% feed f 40% when spot drilling C 180 WALTER Valenite Technical information Drilling / boring / reaming