Turning Cutting data for turning inserts negative basic shape Carbide grades Material group tr Cutting data for wet machining Dry machining is po

Turning Cutting data for turning inserts negative basic shape Carbide grades Material group tr 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 3 Cutting material grades Starting values for cutting speed Vc ft/min W f 0.004 WAK1 in / re 0.016 v 0.024 W f 0.004 HC VAK2 in / re 0.016 0 v 0.024 W f 0.004 VAK3 in / re 0.016 ) v 0.024 p Unalloyed steel C < 0.25 % annealed 125 428 P1 2030 1540 1180 1120 750 620 C > 0.25 < 0.55 % annealed 190 639 P2 1740 1250 1020 950 620 490 C > 0.25 < 0.55 % tempered 210 708 P3 1310 1020 850 690 560 430 C > 0.55 % annealed 190 639 P4 1670 1180 950 890 560 430 C > 0.55 % tempered 300 1013 P5 1050 790 720 520 360 300 Free cutting steel (short-chipping) annealed 220 745 P6 Low-alloyed steel annealed 175 591 P7 1510 1120 950 790 560 490 tempered 300 1013 P8 1180 850 790 520 330 230 tempered 380 1282 P9 850 590 460 390 260 160 tempered 430 1477 P10 230 200 High-alloyed steel and high-alloyed tool steel annealed 200 675 P11 1570 1120 720 790 560 330 hardened and tempered 300 1013 P12 820 490 360 330 230 200 hardened and tempered 400 1361 P13 260 230 Stainless steel ferritic / martensitic, annealed 200 675 P14 martensitic, tempered 330 1114 P15 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 1210 850 590 980 660 490 790 520 430 pearlitic 260 867 K2 1080 720 460 850 520 360 660 390 300 Grey cast iron low tensile strength 180 602 K3 2030 1350 980 1800 1050 750 1610 820 590 high tensile strength / austenitic 245 825 K4 1280 850 590 980 690 460 750 560 360 Cast iron with spheroidal graphite ferritic 155 518 K5 1350 980 750 1050 750 560 820 590 430 pearlitic 265 885 K6 980 750 590 750 560 460 590 430 360 GGV (CGI) 200 675 K7 1050 660 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 4 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 4 31 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 180 hardened and tempered 55 HRC H2 150 hardened and tempered 60 HRC H3 110 Hardened cast iron hardened and tempered 55 HRC H4 150 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 Recommended application (the specified cutting data are regarded as starting values for the recommended application). Possible application. Note If dry machining is possible, the tool life reduces by an average of 20-30 %. 1 The machining groups are assigned from H 8 onwards. A 434 WALTER Valenite Technical information