SumiBORON PCBN Blanks
  • PCBN (polycrystalline cubic boron nitride) blanks are comprised of a polycrystalline layer of CBN crystals and a tungsten carbide substrate bonded together as an integral blank by an ultra high pressure / temperature process.
  • PCBN tools are used to machine ferrous metals such as:
    - hardened steel
    - gray/ nodular iron
    - powdered metal
    - Ni/Co based superalloys
  • Sumiboron blanks are available in six grades and a wide variety of shapes & sizes including round disks up to 64.0 mm in diameter

Characteristics and Applications

GRADE
BN100
BN250
BN300
BN500
BN600
BNX20 (US300)
BNX10
BNX25
CBN Content %
85
60
60
65
90
60
50
60-70
CBN Crystal Size (Microns A.P.S.)
3
1
0.5
4
2
3
4
3 - 4
Primary Binder Material
titanium nitride
titanium nitride
titanium nitride
titanium carbide
Co-Al
titanium nitride
titanium nitride
titanium nitride
Vickers Hardness (Hv)
3900-4200
3200-3400
3300-3500
3800-3500
3900-4200
3200-3400
2800-3000
2900-3100
TRS Value (kg./mm2)
85
105
115
105
105
105
85
100-110
Recommended for machining
• gray cast iron
• powdered metal
• light & medium interruped hardened steel
• severely interrupted hardened steel
• nodular iron
• gray cast iron
• alloyed iron
• gray cast iron
• powdered metal
• chilled cast iron
• Ni/Co based superalloys
• Ni-hard iron
• high speed continuous turning of hardened steel
• high speed continuous hardened steel finishing
• High Speed interrupted

 

FULL ROUNDS

Product No.
Dimensions
D
T
R45.0/2.5
45.0
2.5
R50.8/2.5
50.8
2.5
R58.0/2.5
58.0
2.5
R64.0/2.5
64.0
2.5

SEMI-FINISHED INSERTS

ROUND
SQUARE
TRIANGLE

Product No.
Dimensions (mm)
Round
Makes
D
T
R10.0/3.2
RNG32, RPG32
10.0
3.2
R13.1/3.2
RNG42, RPG42
13.1
3.2
R13.1/4.8
RNG43, RPG43
13.1
4.8
Square
Makes
IC
T
10.0S/3.2
SNG322, SPG322
10.0
3.2
13.1S/3.2
SNG422, SPG422
13.1
3.2
13.1S/4.8
SNG432, SPG432
13.1
4.8
Triangle
Makes
IC
T
60T11.7/3.2
TNG222, TPG222
6.75
3.2

Minimum PCBN layer thickness is 0.8mm
BN full round blanks are available in 1.6, 2.5, 3.2 or 4.8 mm thickness
Grade designation must follow product number when ordering. Example: R64.0/2.5-BN250

 

TRIANGLES

Product No.
Previous No.
Dimensions (mm)
L
T
35T5.0/2.5
-
35°
5.0
2.5
35T5.0/1.6
-
35°
5.0
1.6
35T7.0/2.5
-
35°
7.0
2.5
35T7.0/1.6
-
35°
7.0
1.6
45T5.0/2.5
T4520
45°
5.0
2.5
45T5.0/1.6
-
45°
5.0
1.6
45T7.0/2.5
T4525
45°
7.0
2.5
45T7.0/1.6
-
45°
7.0
1.6
60T5.0/2.5
T6020
60°
5.0
2.5
60T5.0/1.6
-
60°
5.0
1.6
60T7.0/2.5
T6025
60°
7.0
2.5
60T7.0/1.6
-
60°
7.0
1.6
80T5.0/2.5
-
80°
5.0
2.5
80T5.0/1.6
-
80°
5.0
1.6
80T7.0/2.5
-
80°
7.0
2.5
80T7.0/1.6
-
80°
7.0
1.6
90T5.0/2.5
T9020
90°
5.0
2.5
90T5.0/1.6
-
90°
5.0
1.6
90T7.0/2.5
T9025
90°
7.0
2.5
90T7.0/1.6
-
90°
7.0
1.6

Minimum PCBN layer thickness is 0.8mm.
Grade designation must follow product number when ordering. Example: 60T5.0/2.5-BN250.
Additional sizes available upon request.

Product Line