
Chipbreaker and Grade Selection Guide for Turning
Material Exotic Alloy
Work
Exotic Alloy
Grades
SUMIBORON
BN7000 L10
Insert Grades
400 Ceramic
WX120
Cutting Speed vc (m/min)
CBN
200
BN7000
100 Coated Carbide
A 50
AC5015S
Carbide AC5025S
Coated Carbide
EH510 EH520
Carbide
Steel
10
0
Finishing Roughing
Stainless
Steel
Continuous Partially Interrupted Interrupted ★ WX120 is only sold in Japan.
Chipbreakers
Cast Iron
Negative Type Positive Type
EM Type
Exotic Alloy
MU Type
4.0 EM Type 4.0
EG Type
Depth of Cut ap (mm)
Depth of Cut ap (mm)
EG Type SU Type
SI Type
EX Type MU Type
(UP Type) SI Type
Hardened
UP Type SU Type
Steel
2.0 2.0
EF Type FX Type
EX Type
SU Type
FC
Type
SU Type FY Type
Non-Ferrous
FX / FY Type
0 0.1 0.2 0.3 0.4 0 0.1 0.2 0.3 0.4
Metal
EF Type FC Type
Feed Rate f (mm/rev) Feed Rate f (mm/rev)
For Small
Recommended Cutting Conditions
Lathes
Exotic Alloy
(Red text indicates 1st recommendation)
Cutting Cutting Conditions Min. - Optimum - Max.
Work Material Chipbreaker Grade
Process Depth of Cut ap (mm) Feed Rate f (mm/rev) Cutting Speed vc (m/min)
Finishing EF
AC5015S 0.2-0.5-1.5 0.10-0.12-0.20 50-70-110
AC5025S
Heat-Resistant Alloy AC5015S
Light EX 0.5-1.0-3.0 0.10-0.20-0.30 40-60-90
( )
Ni-based Material AC5025S
Fe-based Material
Medium EG
AC5015S 0.5-2.0-4.0 0.15-0.25-0.30 40-60-90
Co-based Material AC5025S
Rough MU/EM
AC5015S 1.0-2.0-4.0 0.20-0.25-0.40 30-55-80
AC5025S
Finishing EF(SU)
EH510 0.2-0.5-1.5 0.1-0.15-0.2 50-65-80
(AC5015S)
Titanium Alloy Light EX AC5015S 0.5-1.0-2.5 0.1-0.20-0.25 40-55-70
( Pure Titanium (99.5%)
α + β Alloy ) Medium EG
EH510
(AC5015S)
0.5-2.0-3.5 0.15-0.25-0.3 40-55-70
Rough MU/EM AC5025S 1.0-2.0-3.5 0.2-0.25-0.3 30-40-50
A18