Solid Carbide Drills Recommended Cutting Conditions Table 06 - DHN Series (External Coolant) Material Hardened Steel / Pre-Hardened Steel Nickel Alloy Hardness HRC 40 ~ 45 HRC 45 ~ 50 HRC 50 ~ 60 HRC 33 ~ 45 Vc 30 ~ 50 m/min 20 ~ 30 m/min 20 ~ 30 m/min 15 ~ 30 m/min Dia (mm) RPM Feed(mm/rev) RPM Feed(mm/rev) RPM Feed(mm/rev) RPM Feed(mm/rev) 4 3200 0.04 ~ 0.08 2000 0.04 ~ 0.08 2000 0.03 ~ 0.06 1600 0.04 ~ 0.08 5 2500 0.05 ~ 0.10 1600 0.05 ~ 0.10 1600 0.04 ~ 0.08 1300 0.05 ~ 0.10 6 2100 0.06 ~ 0.12 1300 0.06 ~ 0.12 1300 0.05 ~ 0.09 1100 0.06 ~ 0.12 7 1800 0.07 ~ 0.14 1100 0.07 ~ 0.14 1100 0.06 ~ 0.11 900 0.07 ~ 0.14 8 1600 0.08 ~ 0.16 1000 0.08 ~ 0.16 1000 0.06 ~ 0.12 800 0.08 ~ 0.16 9 1400 0.09 ~ 0.18 900 0.09 ~ 0.18 900 0.07 ~ 0.14 700 0.09 ~ 0.18 10 1300 0.10 ~ 0.20 800 0.10 ~ 0.20 800 0.08 ~ 0.15 600 0.10 ~ 0.20 11 1150 0.11 ~ 0.22 720 0.11 ~ 0.22 720 0.09 ~ 0.17 600 0.11 ~ 0.22 12 1100 0.12 ~ 0.24 700 0.12 ~ 0.24 700 0.10 ~ 0.18 500 0.12 ~ 0.24 Table 07 - DZC Series (Internal Coolant) Drill Diameter Ø3-6mm Ø6.1~10mm Ø10.1-16mm Work Material Hardness Vc Feed Vc Feed Vc Feed(m/min)(mm/rev)(m/min)(mm/rev)(m/min)(mm/rev) Mild Steel (<180HB) 60~100 0.1~0.2 80~120 0.15~0.3 100~140 0.25~0.4 P Cabon Steel (180~280HB) 60~90 0.1~0.2 80~110 0.15~0.3 100~130 0.25~0.4 Alloy Steel (280~350HB) 50~80 0.08~0.18 60~100 0.15~0.27 70~110 0.22~0.35 M Stainless Steel (<200HB) 30~50 0.06~0.15 40~70 0.1~0.25 50~90 0.2~0.3 Cast lron (<350Mpa) 70~100 0.1~0.2 80~120 0.15~0.3 90~140 0.25~0.4 K Ductile Cast lron (<450Mpa) 50~80 0.1~0.2 60~90 0.15~0.3 70~110 0.25~0.4 Aluminum <12% Si - 70~120 0.1~0.25 80~140 0.15~0.35 90~160 0.3~0.45 N Aluminum >12% Si - 60~100 0.1~0.25 70~120 0.15~0.35 90~140 0.3~0.45 S Heat Resistant Alloy - 15~30 0.02~0.08 20~40 0.04~0.1 25~45 0.06~0.12 H Hardened Material 40~60HRC 10~25 0.02~0.08 15~35 0.04~0.1 20~40 0.06~0.12 Table 08 - DZN Series (External Coolant) Drill Diameter Ø3-6mm Ø6.1~10mm Ø10.1-16mm Work Material Hardness Vc Feed Vc Feed Vc Feed(m/min)(mm/rev)(m/min)(mm/rev)(m/min)(mm/rev) Mild Steel (<180HB) 35~60 0.1~0.2 45~75 0.15~0.3 50~85 0.25~0.4 P Cabon Steel (180~280HB) 30~55 0.1~0.2 40~70 0.15~0.3 45~80 0.25~0.4 Alloy Steel (280~350HB) 25~50 0.08~0.18 35~65 0.15~0.27 40~75 0.22~0.35 M Stainless Steel (<200HB) 20~40 0.06~0.15 25~50 0.1~0.25 30~60 0.2~0.3 Cast lron (<350Mpa) 40~60 0.1~0.2 50~75 0.15~0.3 55~85 0.25~0.4 K Ductile Cast lron (<450Mpa) 35~55 0.1~0.2 45~70 0.15~0.3 50~80 0.25~0.4 Aluminum <12% Si - 60~100 0.1~0.25 65~115 0.15~0.35 70~130 0.3~0.45 N Aluminum >12% Si - 50~90 0.1~0.25 60~110 0.15~0.35 65~120 0.3~0.45 S Heat Resistant Alloy - 15~30 0.02~0.08 20~40 0.04~0.1 25~45 0.06~0.12 H Hardened Material 40~60HRC 10~25 0.02~0.08 15~35 0.04~0.1 20~40 0.06~0.12 B045