ISCAR is expanding the geometry range of ISOTURN CBN tipped inserts.
Following market demand for hard part turning and the successful performance results of the
currently available CBN inserts, ISCAR is expanding the range of geometries, edge preparations
and CBN grade options.
ISCAR PCBN Grades
Recommended cutting conditions for uncoated CBN Grades
Workpiece
material
Grade
Description
Cutting mode
Feed
mm/rev
Depth of cut
mm
Continuous cut
Light interrupted
Heavy interrupted
Cutting speed M/Min
H
Hardness
steel
50-65
HRC
IB05H
High speed continuous
hard turning
100-300
-
-
0.03-0.18
0.05-0.30
IB10H
Continuous to light interrupted
grade for superior surface finish
30-200
30-150
-
0.03-0.18
0.05-0.30
IB20H
Continuous to ordinarily
interrupted turning
30-200
30-200
-
0.03-0.25
0.05-0.50
IB25H
Tough grade for heavily
interrupted turning
-
-
30-200
0.03-0.25
0.05-0.50
IB90
Toughest grade for heavily
interrupted turning
-
-
30-120
0.03-0.30
0.05-0.50
Recommended cutting conditions for hardened steel with coated CBN Grades 50-65HRC
Workpiece
material
Grade
Description
Cutting mode
Feed
mm/rev
Depth of cut
mm
Continuous cut
Light interrupted
Heavy interrupted
Cutting speed M/Min
H
Hardness
steel
50-65
HRC
IB25HC
Coated grade for
interrupted turning
-
-
100-220
0.05-0.25
0.10-0.50
IB25HA
Coated grade for light
interrupted turning
-
100-220
-
0.05-0.25
0.05-0.50
IB20HC
Coated grade for high
speed interrupted turning
-
150-250
150-200
0.05-0.25
0.05-0.50
IB10HC
Coated grade for high
speed continuous turning
150-300
100-300
-
0.05-0.20
0.05-0.30
Insert Designation Code Key
Chipbreaker: HF- Finishing HM- Medium cutting
01-30: application range according to
the ISO 513 classification and
application of cutting materials