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 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 /PP10 in / re 0.016 S v 0.024 W f 0.004 HC PP20 in / re 0.016 S v 0.024 W f 0.004 PP30 in / re 0.016 S v 0.024 p Unalloyed steel C < 0.25 % annealed 125 428 P1 2040 1550 1190 1710 1250 1020 1450 990 830 C > 0.25 < 0.55 % annealed 190 639 P2 1740 1250 990 1450 1020 790 1220 830 660 C > 0.25 < 0.55 % tempered 210 708 P3 1320 1050 860 1090 860 690 890 730 530 C > 0.55 % annealed 190 639 P4 1650 1190 920 1380 960 730 1150 760 600 C > 0.55 % tempered 300 1013 P5 1050 790 730 860 630 560 690 460 370 Free cutting steel (short-chipping) annealed 220 745 P6 1650 1190 920 1380 960 730 1150 760 600 Low-alloyed steel annealed 175 591 P7 1510 1120 960 1250 920 760 1020 730 660 tempered 300 1013 P8 960 760 660 790 560 500 630 400 300 tempered 380 1282 P9 830 600 460 690 500 370 500 330 230 tempered 430 1477 P10 200 170 High-alloyed steel and high-alloyed tool steel annealed 200 675 P11 1580 1120 730 1320 920 560 1020 730 400 hardened and tempered 300 1013 P12 790 460 400 630 400 300 400 300 230 hardened and tempered 400 1361 P13 230 200 Stainless steel ferritic / martensitic, annealed 200 675 P14 1250 990 860 1020 830 660 790 660 500 martensitic, tempered 330 1114 P15 920 660 530 730 500 370 530 370 330 M Stainless steel austenitic, quench hardened 200 675 M1 790 690 500 430 austenitic, precipitation hardened (PH) 300 1013 M2 330 300 300 230 austenitic / ferritic, duplex 230 778 M3 560 370 370 300 K Malleable cast iron ferritic 200 675 K1 1050 690 530 920 730 530 pearlitic 260 867 K2 890 560 400 790 600 370 Grey cast iron low tensile strength 180 602 K3 1910 1120 790 1680 860 630 high tensile strength / austenitic 245 825 K4 1050 730 500 790 600 370 Cast iron with spheroidal graphite ferritic 155 518 K5 1120 790 600 860 630 460 pearlitic 265 885 K6 790 600 500 630 460 370 GGV (CGI) 200 675 K7 960 630 530 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 432 WALTER Valenite Technical information