Chipbreaker and Grade Selection Guide for Turning Steel Steel
■ Application Guide
*Chipbreaker dimensions in mm
EGU Type Chipbreaker 2.05
1st Recommended Grade
0.25
AC8025P
25°
1st Recommended
7°
Chipbreakers for High-efficiency Machining
Main Chipbreakers Strong Cutting Edge Chipbreakers
EFE Type
ESE Type
ESU Type
ESX Type
1.3
1.40
1.35
1.5
0.2
0.1
Finishing to Shallow Depth of Cut
13°
0.70
15°
A
17 °
20°
5 °
3°
EGE Type
EGU Type
EUX Type
2.0
2.05
2.0 15°
0.25
0.25
0.25
25°
General-purpose
23°
7°
3°
1st Recommended
EME Type
EMX Type
EMU Type
2.3 0.2 0.4
2.5
2.4
0.3
Roughing to Large Depth of Cut
0.3
20 °
20 °
4 °
4°
-15 °
Flank Wear
Crater Wear
Chipping
Breakage
Better Wear Resistance
Better Toughness
AC8015P High-speed Machining
AC8035P Interrupted Machining
EGU Type
EGU Type
2.05
2.05
0.25
0.25
To improve tool life
To improve tool life
25°
25°
7°
7°
EUX Type
EGE Type
2.0
2.0 15°
To improve machining efficiency
To improve machining stability
0.25
0.25
23°
3°
Dimensions in mm
Recommended Cutting Conditions
Steel
(Red text indicates 1st recommendation)
Workpiece Material
Cutting Process
Cutting Conditions
Min. - Max.
Chipbreaker
Grade
Depth of Cut a
Cutting Speed v
f (IPR)
Feed Rate
p (inch)
c (SFM)
Fine Finishing EFB Finishing EFE
.008 - .040 .020 - .060 .040 - .160 .060 - .240 .008 - .040 .020 - .060 .040 - .160 .060 - .240 .008 - .040 .020 - .060 .040 - .160 .060 - .240
.002 - .010 .004 - .016 .008 - .020 .012 - .024 .002 - .010 .004 - .016 .008 - .020 .012 - .024 .002 - .010 .004 - .016 .008 - .020 .012 - .024
330 - 1500 850 - 1600 650 - 1200 450 - 800 330 - 1100 700 - 1400 500 - 850 350 - 600 160 - 900 550 - 1100 400 - 750 300 - 550
T1500Z
AC8015P
Mild Steel (SS400 and others)
EGU AC8025P
Medium
AC8035P
Rough EMU Fine Finishing EFB Finishing EFE
T1500Z
Carbon Steel Alloy Steel (S45C, SCM435, and others)
AC8015P
Medium
EGU AC8025P
AC8035P
Rough EMU Fine Finishing EFB Finishing EFE
T1500Z
Hard Steel Alloy Steel (SCM440H and others)
AC8015P
EGU AC8025P
Medium
AC8035P
Rough EMU
A13
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