Sumitomo General Catalog 2025-2026

Chipbreaker and Grade Selection Guide for Turning Exotic Alloy

Exotic Alloy

Grades

SUMIBORON BN7000

1,300

L10

BN7125 CBN

660

Coated Carbide AC5005S

Coated Carbide AC5015S Cemented Carbide EH510

330

A

AC5025S EH520 Coated Carbide Cemented Carbide

165

0

Finishing

Roughing

Partially Interrupted

Interrupted

Continuous

Chipbreakers

Negative Type

Positive Type

EEM Type

EGU type

EMU Type

.160

.160

EEM Type

EEG Type

ESU Type

EEG Type

MESI type

EMU Type

EEX Type (EUP Type )

MESI Type

EUP Type

ESU type

.080

.080

EGU type

FX Type

EEF Type ESU Type

EEX Type

EFC type

ESU Type

FY Type

FX/FY type

0

.004

.008 .012 .016

0

.004

.008

.012 .016

MEFC/ EFC Type

EEF Type

Feed Rate f (IPR)

Feed Rate f (IPR)

Recommended Cutting Conditions

Exotic Alloy

(Red text indicates 1st recommendation)

Cutting Conditions

Cutting Process

Min. - Max.

Work Material

Chipbreaker

Grade

Depth of Cut a p (inch)

Cutting Speed v c (SFM)

Feed Rate f (IPR)

AC5005S AC5015S AC5025S AC5005S AC5015S AC5025S AC5005S AC5015S AC5025S AC5015S AC5025S EH510 (AC5005S, AC5015S) AC5005S, AC5015S EH510 (AC5005S, AC5015S) AC5025S

EEF

.008 - .060

.004 - .008

165 - 400

Finishing

Heat-Resistant Alloy ( Ni-based Material ) Fe-based Material Co-based Material

EEX

.020 - .120

.004 - .012

130 - 350

Light

EEG

.020 - .160

.006 - .012

130 - 350

Medium

EMU/EEM

.040 - .160

.008 - .016

100 - 300

Rough

EEF (E SU )

.008 - .060

.004 - .008

165 - 300

Finishing

Titanium Alloy ( Pure Titanium (99.5%) ) α + β Alloy

EEX

.020 - .100

.004 - .010

130 - 250

Light

EEG

.020 - .140

.006 - .012

130 - 250

Medium

EMU/EEM

.040 - .140

.008 - .012

100 - 165

Rough

A18

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