Cutting data WALTER for roughing Face / shoulder milling Material group Cutting data for wet machining Dry machining is possible Structure of mai

Cutting data WALTER for roughing Face / shoulder milling Material group Cutting data for wet machining Dry machining is possible Structure of main material groups and identification letters Brinell hardness HB Tensile strength Rm N/mm2 Machining group 1 =3i Cutting material grades Starting values for cutting speed vc ft/min WKF ae / 1/1 1/2 35S Dc 1/5 // a 21 e /H C P35 Dc 1/5 WKP WKP ae / 1/1 1/2 25 / 25S Dc 1/5 p Unalloyed steel C < 0.25 % annealed 125 428 P1 820 980 820 980 950 1050 C > 0.25 < 0.55 % annealed 190 639 P2 720 850 720 850 850 1080 C > 0.25 < 0.55 % tempered 210 708 P3 710 820 710 820 840 1050 C > 0.55 % annealed 190 639 P4 720 850 720 850 850 1080 C > 0.55 % tempered 300 1013 P5 520 590 520 590 720 850 Free cutting steel (short-chipping) annealed 220 745 P6 690 790 690 790 820 1030 Low-alloyed steel annealed 175 591 P7 720 890 720 890 850 1050 tempered 300 1013 P8 560 620 560 620 690 820 tempered 380 1282 P9 430 490 430 490 560 620 tempered 430 1477 P10 360 430 360 430 490 560 High-alloyed steel and high-alloyed tool steel annealed 200 675 P11 430 520 430 520 460 560 hardened and tempered 300 1013 P12 260 300 260 300 360 430 hardened and tempered 400 1361 P13 230 260 230 260 300 360 Stainless steel ferritic / martensitic, annealed 200 675 P14 460 520 460 520 martensitic, tempered 330 1114 P15 300 360 300 360 M Stainless steel austenitic, quench hardened 200 675 M1 austenitic, precipitation hardened (PH) 300 1013 M2 austenitic / ferritic, duplex 230 778 M3 K Malleable cast iron ferritic 200 675 K1 520 620 520 620 590 690 pearlitic 260 867 K2 460 560 460 560 520 620 Grey cast iron low tensile strength 180 602 K3 980 1080 980 1080 1050 1150 high tensile strength / austenitic 245 825 K4 620 720 620 720 590 690 Cast iron with spheroidal graphite ferritic 155 518 K5 660 720 660 720 720 790 pearlitic 265 885 K6 430 490 430 490 460 560 GGV (CGI) 200 675 K7 430 520 430 520 490 590 N Aluminum wrought alloys cannot be hardened 30 N1 hardenable, hardened 100 343 N2 Cast aluminum alloys < 12 % Si, not hardenable 75 260 N3 < 12 % Si, hardenable, hardened 90 314 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 90 314 N8 Cu-alloys, short-chipping 110 382 N9 high-strength, Ampco 300 1013 N10 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 410 1396 S8 Tungsten alloys 300 1013 S9 Molybdenum alloys 300 1013 S10 H Hardened steel hardened and tempered 50 HRC H1 hardened and tempered 55 HRC H2 hardened and tempered 60 HRC H3 Hardened cast iron hardened and tempered 55 HRC H4 O Thermoplasts without abrasive fillers O1 1310 1310 1310 1310 Thermosetting plastics without abrasive fillers O2 980 980 980 980 Plastic, glass-fiber reinforced GFRP O3 Plastic, carbon-fiber reinforced CFRP O4 Plastic, aramid fiber reinforced AFRP O5 Graphite (technical) 80 Shore O6 1310 1640 Recommended application (the specified cutting data are regarded as starting values for the recommended application). Possible application, reduce cutting data by 30-50 % (increase for ISO M approx. 70-80 %). 1 The machining groups are assigned from H 8 onwards. 2 Cutting data can also be used without coolant. ae / Dc 1/10, Vc 10 % higher than 1/5. F 368