Center drill

VDP

ISOCutting speedFeed :f (mm/rev)
Workpiece materialHardnessVc (m/min)VDP107VDP165VDP207VDP324 / VDP328VDP409 / VDP412VDP509 / VDP513VDP641
Carbon steel S45C, S55C, etc. C45, C55, etc.- 300 HB40 - 800.02 - 0.040.025 - 0.050.025 - 0.050.04 - 0.080.05 - 0.10.05 - 0.10.06 - 0.12
Alloy steel SCM440, SCr420, etc. 42CrMo4, 20Cr4, etc.- 300 HB30 - 500.02 - 0.040.025 - 0.050.025 - 0.050.04 - 0.080.05 - 0.10.05 - 0.10.06 - 0.12
Prehardened steel PX5, NAK80, etc.30 - 40 HRC20 - 300.02 - 0.040.025 - 0.050.025 - 0.050.04 - 0.080.05 - 0.10.05 - 0.10.06 - 0.12
Stainless steel SUS304, SUS316, etc. X5CrNi18-9, X5CrNiMo17-12-2, etc.- 200 HB15 - 250.015 - 0.030.02 - 0.040.02 - 0.040.04 - 0.080.05 - 0.10.05 - 0.10.06 - 0.12
Grey cast iron FC250, FC300, etc. 250, 300, etc., GG250, GG300, etc.150 - 250 HB60 - 1000.02 - 0.040.025 - 0.050.025 - 0.050.05 -0.090.07 - 0.0120.07 - 0.120.12 - 0.18
Ductile cast iron FCD450, etc. 450-10S, etc., GGG450, etc.150 - 250 HB60 - 1000.02 - 0.040.025 - 0.050.025 - 0.050.04 - 0.080.05 - 0.10.05 - 0.10.1 - 0.15
Titanium alloys Ti-6Al-4V, etc.-15 - 250.01 - 0.020.01 - 0.020.015 - 0.030.04 - 0.070.04 - 0.070.04 - 0.070.04 - 0.07
Heat-resistant alloys Inconel 718, etc.-10 - 200.01 - 0.020.01 - 0.020.015 - 0.030.03 - 0.060.03 - 0.060.03 - 0.060.03 - 0.06
Hardened steel SKD6, SKT4, etc. 55NiCrMoV7, etc.40 - 50 HRC15 - 25---0.04 - 0.070.04 - 0.070.04 - 0.070.04 - 0.07
Hardened steel SKD11, SKH51, etc. HS6-5-2, etc.50 - 60 HRC10 - 20---0.03 - 0.060.03 - 0.060.03 - 0.060.03 - 0.06