
ISO Workpiece materials Priority Grade speed DC (mm)
Vc (m/min) ø6 - ø7.9 ø8 - ø9.9 ø10 - ø11.9 ø12 - ø13.9 ø14 - ø15.9 ø16 - ø19.9 ø20 - ø22.9
Low carbon steel (C < 0.3) First choice AH725
SS400, SM490, S25C, etc. 80 - 140 0.09 - 0.13 0.12 - 0.25 0.15 - 0.28 0.18 - 0.3 0.2 - 0.35 0.25 - 0.45 0.25 - 0.45
| St42-1, St52-3, C25, etc. | Wear resistance | AH9130 |
| High carbon steel (C > 0.3) | First choice | AH725 |
S45C, S55C, etc. 70 - 120 0.09 - 0.13 0.12 - 0.25 0.15 - 0.28 0.18 - 0.3 0.2 - 0.35 0.25 - 0.45 0.25 - 0.45 2
| C45, C55, etc. | Wear resistance | AH9130 |
| Low alloy steel | First choice | AH725 |
70 - 120 0.08 - 0.13 0.11 - 0.25 0.14 - 0.28 0.16 - 0.32 0.18 - 0.35 0.23 - 0.4 0.25 - 0.45
| SCM415, etc. | Wear resistance | AH9130 |
| Alloy steel | First choice | AH725 |
SCM440, SCr420, etc. 40 - 90 0.08 - 0.13 0.11 - 0.25 0.14 - 0.28 0.16 - 0.32 0.18 - 0.35 0.23 - 0.4 0.25 - 0.45
| 42CrMo4, 20Cr4, etc. | Wear resistance | AH9130 | |
| Stainless steel | First choice | AH725 |
SUS304,SUS316, etc. 30 - 70 0.08 - 0.1 0.1 - 0.15 0.12 - 0.18 0.14 - 0.2 0.16 - 0.24 0.16 - 0.26 0.18 - 0.3 3
X5CrNi18-9, X5CrNiMo17-12-2, etc. Wear resistance AH9130 First choice AH725
Aluminium alloys 80 - 220 0.1 - 0.2 0.2 - 0.35 0.25 - 0.4 0.3 - 0.45 0.35 - 0.5 0.4 - 0.6 0.5 - 0.75
| ADC12, etc. | Wear resistance | AH9130 |
| Titanium alloys | First choice | AH725 |
20 - 50 0.05 - 0.07 0.06 - 0.12 0.08 - 0.15 0.1 - 0.18 0.12 - 0.2 0.14 - 0.22 0.18 - 0.27
Ti-6Al-4V, etc. Wear resistance AH9130
First choice AH725
Nickel-based alloys 20 - 50 0.05 - 0.07 0.06 - 0.11 0.08 - 0.13 0.1 - 0.15 0.12 - 0.18 0.12 - 0.22 0.14 - 0.25 4
Wear resistance AH9130 First choice AH725
Hardened steel 20 - 50 0.05 - 0.07 0.06 - 0.12 0.08 - 0.15 0.1 - 0.18 0.12 - 0.2 0.14 - 0.22 0.16 - 0.25
Wear resistance AH9130
- Cutting conditions in the above table show standard cutting conditions. - Cutting conditions may change due to the rigidity and power of the machine and the workpiece material. - Machined hole diameter may change depending upon the rigidity of the machine tool or cutting conditions. 5