CBN

Global Support, Global Solutions.

Product News No.050

Nano-polycrystalline CBN Grade

SUMIBORON BINDERLESS

NCB100Rev. 2

Excellent performance forMachining of Exotic Alloys

SUMIBORON BINDERLESS,Adopt
nano-polycrystalline CBN, for cutting edges

High efficiency and high precision machining are possible
due to the use of the CBN tools with no binders

CementedCarbideHardBrittle
Material

Nano-polycrystalline CBNSUMIBORON BINDERLESSSUMIBORON BINDERLESS are CBN with nano to submicron CBN grains boundtight and no binders.
The higher hardness and improved thermal conductivity compared to conventional
CBN grades ensure higher efficiency and longer tool life for use with exotic alloys
such as titanium alloy and Co-Cr alloy.
DComparison of Structure (SEM image)

DCharacteristic Values

Metal binder

SUMIBORON
BINDERLESS

Conventional
CBN

CBN content

100

90 ~ 95

Binder-WC-Co

Hardness Hv

51 ~ 54

41 ~ 44

Thermalconductivity( W/m.K)

180 ~ 200

100 ~ 120(vol%)

CBN grains
200~500nm

CBN grains
500nm

SUMIBORON BINDERLESS

1~5µm

3µm(GPa)

Conventional CBN

Nano-polycrystalline CBN Grade

SUMIBORON BINDERLESS

NCB100The cutting edge in NCB100 adopts nano-polycrystalline CBN with higher hardness andimproved thermal conductivity compared to conventional CBN. This ensures higherefficiency, improved accuracy, and impressively longer tool life for machining exotic alloys
such as titanium alloy and Co-Cr alloy.
DSuitable for high efficiency finishing of exotic alloys such astitanium alloy, Co-Cr alloy, etc.
Outstanding wear resistance are achieved by the excellent hardness
and thermal conductivity of nano-polycrystalline CBN

DSuperior dimensional tolerances and machined surface
roughness over many hoursLess tool replacements compared to conventional grades
will improve work efficiency and reduce total costs

2SUMIBORON BINDERLESS

NCB100Cutting Speed vc(m/min)█ Application Range (Titanium Alloy Machining)

Titanium
Alloy

300

200

NCB100

100

00.05

0.10

0.15

0.20

Feed Rate f (mm/rev)█ Wear Resistance (Titanium Alloy Machining)

Flank Wear Width (mm)Up to 53 times better wear resistance against cemented carbide tools with high-speed machining,and simple lifetime management with uniform wear progression
0.4

Cemented Carbide

0.3
Conventional CBN0.2Conventional PCD D0.1

DD DDDD0DDD

DDDDNCB100
NCB100102030

NCB100(After 1km)

40(After 35km)

Cemented Carbide(After 1km)

Cutting Distance (km)Work Material : Titanium Alloy (Ti-6Al-4V) Tool : NU-CNGA120408
Cutting Conditions : vc=150m/min f=0.15mm/rev ap=0.5mm Wet (High-pressure coolant)█ Machined Surface Roughness (Titanium Alloy Machining)

SurfaceRoughness Rz(µm)

Stable surface roughness profile with values maintained close to theoretical surface
roughness for extended periods(µm)

8.0NCB100Conventional PCD

7.0(After 1km)

4.0
3.000-2.5

6.0
5.0

2.5

CementedCarbide

Conventional CBN

DD D D D DD
DD10DD20NCB100DDNCB100D(After 35km)

Theoretical Surface
Roughness

30

Rz3.6µm

2.50-2.5

Rz4.2µm

Conventional PCD 2.540(After 1km)

Cutting Distance (km)0-2.5

Rz6.2µm

Work Material : Titanium Alloy (Ti-6Al-4V) Tool : NU-CNGA120408
Cutting Conditions : vc=150m/min f=0.15mm/rev ap=0.5mm Wet (High-pressure coolant)

3

SUMIBORON BINDERLESS

NCB100Cutting Speed vc(m/min)█ Application Range (Co-Cr Alloy Machining)

Co-CrAlloy300200100

NCB10000.05

0.100.150.20

Feed Rate f (mm/rev)█ Wear Resistance (Co-Cr Alloy Machining)

Flank Wear Width (mm)Increased efficiency through consistent wear resistance evenwith high-speed machining of 150m/min
0.3

Cermet0.2

CementedCarbide

0.1

NCB100(After 0.5km)

NCB100Cemented Carbide(After 0.5km)(vc=150mm/min)

D D
D D D
DD0

D

D0.5

DDDD(vc=60mm/min)

1.01.5CermetCutting Distance (km)(After 0.5km)

Work Material : Co-Cr alloy (forged material) Tool : NU-VNGA160408
Cutting Conditions : vc=60,150m/min f=0.1mm/rev ap=0.4mm Wet█ Machined Surface Roughness (Co-Cr Alloy Machining)

SurfaceRoughness Ra(µm)

Maintains stable machined surface roughness
(µm)

1.0

NCB100Cemented Carbide

0.80.6

D D DDDNCB100D

0.40(After 0.5km)

CermetDD

Theoretical Surface
Roughness

0.5

1.0

Cutting Distance (km)1.5

2.00-2.0(µm)

Cemented Carbide(After 0.5km)

2.00-2.0(µm)

Cermet(After 0.5km)

2.00-2.0

Ra0.52µm

Ra0.82µm

Ra0.91µm

Work Material : Co-Cr alloy (forged material) Tool : NU-VNGA160408
Cutting Conditions : vc=60m/min f=0.1mm/rev ap=0.4mm Wet4

SUMIBORON BINDERLESS

NCB100█ Recommended Cutting Conditions
D Titanium AlloyWork Material
Composition
Hardness(HRC)

Grade

Cutting Conditions Min. Q Optimum Q Max.
Depth of Cut ap (mm) Feed Rate f (mm/rev) Cutting Speed vc (m/min)Ti-6Al-4V30 - 35

NCB1000.10 - 0.30 - 0.50 0.05 - 0.15 - 0.20

50 - 200 - 300

Ti-5Al-5V-5Mo-3Cr

32 - 38

NCB1000.10 - 0.30 - 0.50 0.05 - 0.10 - 0.20

50 - 150 - 250

Ti-10V-2Fe-3Al

32 - 38

NCB1000.10 - 0.30 - 0.50 0.05 - 0.10 - 0.20

50 - 150 - 250

D Co-Cr AlloyWork Material
Composition
Hardness(HRC)

Grade

Co-30Cr-5Mo

NCB10035 - 45

Cutting Conditions Min. Q Optimum Q Max.
Depth of Cut ap (mm) Feed Rate f (mm/rev) Cutting Speed vc (m/min)
0.10- 0.15 - 0.30 0.05 - 0.15 - 0.20

50 - 100 - 200

D Cemented Carbide
Work Material
Composition
Hardness(HRA)
WC-20CoBelow 85

Grade
NCB100Cutting Conditions Min. Q Optimum Q Max.
Depth of Cut ap (mm) Feed Rate f (mm/rev) Cutting Speed vc (m/min)
0.03 - 0.10 - 0.20 0.03 - 0.10 - 0.20

5 - 20 - 40

* SUMIDIA BINDERLESS NPD10 recommended for carbide machining at 85HRA or higher.

D Others
Work Material
Composition/Material Hardness(HV)

GradePure Titanium

130 - 230

NCB1000.10 - 0.30 - 0.50 0.05 - 0.10 - 0.20 100 - 250 - 400

Cermet Material

1,000 - 1,500

NCB1000.10 - 0.20 - 0.30 0.05 - 0.10 - 0.20

(Iron-based metal included in binder)

5Cutting Conditions Min. Q Optimum Q Max.
Depth of Cut ap (mm) Feed Rate f (mm/rev) Cutting Speed vc (m/min)
10 - 30 - 50

SUMIBORON BINDERLESS

NCB100█ Application Examples

Titanium Alloy Aeronautic Turbine Parts

Ti-5Al-5V-5Mo-3Cr Aeronautic Leg Components

Impressive tool life with three times the efficiency

Excellent wear and crater resistanceTool life determinant: WearTool Life (min)300250

2.5×200
150
100
500NCB100

Cemented Carbide Tool

vc=150m/min

vc=50m/minVBmax=0.194mm

Chipping

NCB100Cemented Carbide Tool

After 33minutes (5km)of machining

After 2minutes (0.3km)
of machining

Tool : NU-CNGA120408 (NCB100)
Cutting Conditions : vc=150m/min f=0.1mm/rev
Wet
ap=0.2mm

Tool : NU-CNGA120408 (NCB100)
Cutting Conditions : vc=150m/min f=0.1mm/rev
ap=0.4mm Wet (High-pressure coolant)

Co-Cr Alloy Artificial Hip Joint Head

Carbide (WC-20Co) Internal Machining of Die

Impressive tool life with two times the efficiency

Excellent wear resistance when machining
carbides with high Co content
Tool life determinant: Dimensions

400300Tool Life Ratio (times)

No. of Workpieces

Tool life determinant: Appearance,roughness of machined surface

60×2001000Cemented
NCB100 CarbideTool

10PCD

Tool : NU-CCGW09T304 (NCB100)
Cutting Conditions : vc=30m/min f=0.1mm/rev
Dry
ap=0.1mm

Excellent wear resistance when machining
hard cermet material
Tool life determinant: Dimensions andappearance of machined surface
20Tool Life (km)2

vc=30m/min vc=20m/min vc=20m/min

Cermet Material Parts

151050NCB100

3

NCB100 CBN

f=0.150mm/rev f=0.075mm/rev

Tool : NU-VNGA160408 (NCB100)
Cutting Conditions : vc=65m/min f=0.15mm/rev
Wet
ap=0.2mm

4CBN

Tool : NU-CNGA120412 (NCB100)
Cutting Conditions : vc=30m/min f=0.10mm/rev
ap=0.25mm Dry6SUMIBORON BINDERLESS

NCB100█ StocksCat. No.
NU-CNGA 120404
NU-CNGA 120408
NU-CNGA 120412
NU-DNGA 150404
NU-DNGA 150408
NU-DNGA 150412
NU-VNGA 160404
NU-VNGA 160408

DD 1
DDD 1
DD1
DDimensions (mm)Cutting Edge Inscribed
Hole Corner
Length Circle Thickness Size Radius
2.5
2.4
2.3
2.5
2.1
2.0
2.5
1.6

12.7

4.76

5.16

12.7

4.76

5.16

9.525

4.76

3.81

0.4
0.8
1.2
0.4
0.8
1.2
0.4
0.8

Shape

Dimensions (mm)StockCat. No.

NCB100No. of Corners

No. of Corners

Shape

NCB100Stock

Relief Angle

One-use/Positive ( With Hole)

One-use / Negative ( With Hole)

Cutting Edge Inscribed
Hole Corner
Length Circle Thickness Size Radius

NU-CCGW 060204 D 1

2.3

6.35

2.38

2.8

0.4

NU-CCGW 09T304 D
17° NU-CCGW 09T308 D

2.52.49.525

3.97

4.40.40.8

NU-DCGW 070204 D 12.56.35

2.38

2.80.4

NU-DCGW 11T304 D
17° NU-DCGW 11T308 D

2.52.19.525

3.97

4.4

0.40.8NU-VBGW 110304 D
15° NU-VBGW 110308 D

2.51.66.35

3.18

2.80.40.8

NU-VBGW 160404 D
15° NU-VBGW 160408 D

2.51.6

9.525

4.76

4.40.40.8

NU-VCGW 160404 D
17° NU-VCGW 160408 D

2.51.69.525

4.76

4.40.40.87°7°█ Cutting Edge FigureStandard
Cutting Edge specification
identification code

15˚T01215
0.12mm7DMark:Standard Stock Item

Sumitomo Electric Cutting Tools Official Apps for iOS/Android

Cutting calculation AppVery hot or lengthy chips may be discharged while themachine is in operation. Therefore, machine guards, safety
goggles or other protective covers must be used. Fire safety
precautions must also be considered.

Grade & chipbreaker comparison App< SAFETY NOTES >Please handle with care as this product has sharp edges.
Improper cutting conditions or mis-handling of the tool may resultin breakages or projectiles. Therefore, please use the tool within its
recommended conditions.

When using non-water soluble cutting oil, precautions
against fire must be taken and please ensure that a fire
extinguisher is placed near the machine.

Hardmetal Division
Global Marketing Department : 1-1-1, Koyakita, Itami, Hyogo 664-0016, Japan
Tel: +81-72-772-4535
Fax: +81-72-771-0088
https://www.sumitool.com/global

R(2022.02) II 1810 TP/PL