Solid Carbide EndmillsMilling Solid Carbide Endmills Recommended Cutting Conditions Table 029 G550 Seires EPSSH4, EPSCH6 Material CARBON STEEL / ALLOY STEEL ALLOY STEEL / TOOL STEELSCM, SKT, SKD PREHARDENED STEELNAK80 CENA1 Hardness HB180~250 HRC25~35 HRC35~45 Vc 96 (m/min) 76 (m/min) 63 (m/min) Dia RPM Feed (mm/min) ap (mm) ae(mm) RPM Feed (mm/min) ap(mm) ae(mm) RPM Feed (mm/min) ap(mm) ae(mm) 3mm 10160 610 4.5 0.15 8000 480 4.5 0.15 67010 402 4.5 0.15 4mm 7640 611 6 0.2 6048 483 6 0.2 5032 402 6 0.2 6mm 5096 712 9 0.3 4032 564 9 0.3 3360 470 9 0.3 8mm 3816 534 12 0.4 3024 423 12 0.4 2512 352 12 0.4 10mm 3056 366 15 0.5 2416 290 15 0.5 2012 241 15 0.5 12mm 2544 304 18 0.6 2016 242 18 0.6 1680 202 18 0.6 Material HARDENED STEELSKD61, SKD11 STAINLESS STEELSUS304 316 CAST IRONFC / FCD Hardness HRC 40~55) Vc 38 (m/min) 63 (m/min) 96 (m/min) Dia RPM Feed (mm/min) ap (mm) ae(mm) RPM Feed (mm/min) ap(mm) ae(mm) RPM Feed (mm/min) ap(mm) ae(mm) 3mm 4076 244 4.5 0.15 5944 594 4.5 0.15 10160 402 4.5 0.15 4mm 3056 244 6 0.2 4456 462 6 0.2 7640 402 6 0.2 6mm 2040 285 9 0.3 2976 476 9 0.3 5096 470 9 0.3 8mm 1528 214 12 0.4 2224 445 12 0.4 3816 352 12 0.4 10mm 1220 146 15 0.5 1784 428 15 0.5 3056 241 15 0.5 12mm 1020 122 18 0.6 1488 387 18 0.6 2544 202 18 0.6 1.Use as highly rigid and accurate machine as possible. 2.If the rpm available is lower than the recommend condition, please reduce the feed rate to the same ratio. 3.Use long shank type please reduce the rpm and feed rate. 4.The Feed and RPM may be changed depending on the M/C conditions ,lubricating and cooling system. A228