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

Turning Cutting data for turning inserts positive 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 f 0.004 WPP01 in/rev 0.008 H 0.012 C f 0.004 WPP10 in/rev 0.008 0.012 p Unalloyed steel C < 0.25 % annealed 125 428 P1 1840 1740 1640 1740 1570 1350 C > 0.25 < 0.55 % annealed 190 639 P2 1570 1480 1410 1480 1350 1050 C > 0.25 < 0.55 % tempered 210 708 P3 1180 1080 1080 1120 1020 950 C > 0.55 % annealed 190 639 P4 1540 1440 1380 1440 1350 1280 C > 0.55 % tempered 300 1013 P5 920 820 720 850 750 690 Free cutting steel (short-chipping) annealed 220 745 P6 1540 1440 1380 1440 1350 1280 Low-alloyed steel annealed 175 591 P7 1380 1280 1210 1310 1210 1150 tempered 300 1013 P8 850 750 690 790 690 620 tempered 380 1282 P9 660 590 520 590 490 430 tempered 430 1477 P10 230 200 160 200 160 High-alloyed steel and high-alloyed tool steel annealed 200 675 P11 1440 1350 1280 1380 1280 1210 hardened and tempered 300 1013 P12 750 660 590 660 590 520 hardened and tempered 400 1361 P13 260 230 200 230 200 Stainless steel ferritic / martensitic, annealed 200 675 P14 1180 1080 1020 martensitic, tempered 330 1114 P15 590 490 430 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 890 790 720 890 790 720 pearlitic 260 867 K2 750 660 590 750 660 590 Grey cast iron low tensile strength 180 602 K3 1710 1610 1540 1640 1540 1410 high tensile strength / austenitic 245 825 K4 890 790 720 890 790 720 Cast iron with spheroidal graphite ferritic 155 518 K5 950 850 790 950 850 790 pearlitic 265 885 K6 660 560 490 660 560 490 GGV (CGI) 200 675 K7 890 720 660 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 90 314 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 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 436 WALTER Valenite Technical information