Coated Grades for Steel Turning AC8115P/AC8020P/AC8025P/AC8035P
█ AC8035P Cutting Performance
Suppresses crack growth and fractures by reducing tensile residual stress. Fracture resistance 2x or more
AC8035P
Interrupted Machining
Stress Control Within Coating
Exceptional Stability
Special surface treatment reduces tensile stress in the coating layer, signi cantly suppressing fractures
AC8035P
SEM image
Tensile Stress 90% Reduced
.012
.010
.008
Tensile residual stress in coating (GPa) 0 0.1 0.2 0.3
0
250
500
No. of Impacts
All corners able to continue
Conventional Tool
SEM image
.012
.010
.008
0
250
500
Tensile residual stress in coating (GPa) 0 0.1 0.2 0.3
No. of Impacts
Unable to continue
Workpiece Material: 4140 (External Interrupted) Insert: CNMG432EGU (AC8035P) Cutting Conditions: v c = 525 SFM f = .0079 to .0118 IPR a p = .079 ” Dry
█ AC8035P Recommended Cutting Conditions
Min. - Max.
Mild Steel ( A283 , etc.) Low Carbon Steel ( 1018 , etc.) Low-alloy Steel ( 8620 , etc.) 180HB or less
High Carbon Steel ( 1040 , etc.) High-alloy Steel ( 4140 , etc.) 180HB or more
Insert Shape / Cutting Edge Length
Chipbreaker
Depth of Cut a p (Inch)
Feed Rate f (IPR)
Cutting Speed v c (SFM)
Depth of Cut a p (Inch)
Feed Rate f (IPR)
Cutting Speed v c (SFM)
.004 .020 .031 .071 .039 .118 .031 .071 .059 .118 .071 .079 .118 .177 .197
.047 .079 .197 .236 .236 .315 .197 .236 .276 .315 .236 .315 .354 .531 1.063
- - - - - - - - - - - - - - -
.004 .004 .004 .008 .008 .014 .006 .008 .008 .014 .008 .008 .014 .018 .031
.018 .016 .018 .024 .028 .031 .018 .024 .028 .031 .024 .028 .031 .045 .063
- - - - - - - - - - - - - - -
EFE ELU/ESU/ESE ESEW EGU/EGE/EUX EMU EME EHG EGU/EGE/EUX
.004 .004 .004 .008 .008 .014 .006 .008 .008 .014 .008 .008 .014 .018 .031
.018 .016 .018 .024 .028 .031 .018 .024 .028 .031 .024 .028 .031 .045 .063
394 394 394 328 328 328 328 328 328 262 328 328 262 394 230
- - - - - - - - - - - - - - -
984 984 984 820 820 656 820 656 656 591 656 656 591 623 492
.004 .020 .031 .071 .039 .118 .031 .071 .059 .118 .071 .079 .118 .177 .197
- - - - - - - - - - - - - - -
.047 .079 .197 .236 .236 .315 .197 .236 .276 .315 .236 .315 .354 .531 1.063
394 394 328 262 262 230 295 230 230 197 230 230 197 295 164
- - - - - - - - - - - - - - -
820 820 656 591 591 525 558 492 492 459 492 492 459 525 394
- - - - - - - - - - - - - - -
CNM 43 TNM 33 DNM 43 TNM 43 SNM 43 WNM 43
EMU EME EHG EMU EME EHG EHF
CNM 54 SNM 54
CNM 64 SNM 64 CNM 86 SNM 86 DNM 54 TNM 54
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