IS25 and IS35
New Additional SiAlON Ceramic Inserts for Machining High-Temperature Alloys
Highlights
ISCAR is adding additional IS25 and IS35 SiAlON ceramic inserts with T-Land and honing for roughing and interrupted cut conditions on high temperature alloys.
In 2017, ISCAR introduced new SiAlON ceramic grades for machining high-temperature alloys.
Following a positive market response, ISCAR is expanding this line with additional “TE” edge
preparation inserts, produced with T-Land and honing for tough applications.
Both the IS25 and IS35 ceramic grades were developed for very high cutting speeds and
interrupted cut applications on nickel based heat resistant alloys such as Inconel, Waspaloy,
Rene, etc.
The new grades are characterized by their high hardness and wear resistance that increase
productivity on super alloy materials such as Inconel 718 and Waspaloy. They provide an
advantageous performance when compared with conventional carbide grades.
Main Advantages
Excellent wear resistance and fracture toughness
Excellent thermal shock resistance
Excellent for roughing operations
Can be used with similar machining conditions such as whisker-reinforced grades
Price advantage over whisker reinforced grades
IS25
IS35
Recommended Cutting Conditions for Ceramic Grades
Cutting speed
Continuous machining
Heavy interrupted cut
Ceramic Grades for Machining Super Alloys
Grade
Vc m/min
Feed m/rev
Depth of Cut mm
Application
Features
IW7
200-400
0.1-0.3
0.5-2.5
Whisker-reinforced ceramic grade, provides high hardness with excellent toughness for machining Ni based high temperature alloys such as Inconel, Waspaloy etc.
IS25
200-350
0.1-0.4
1.0-4.0
Reinforced SiAlON composite grade, Excellent for machining Ni based high temperature alloys such as Inconel, Waspaloy etc.
IS9
180-230
0.1-0.3
1.0-3.0
A very tough grade with high cutting edge stability. Used for roughing to finishing applications on Ni based high temperature alloys and ductile cast iron.
IS35
150-250
0.2-0.5
1.0-4.5
SiAlON ceramic grade, provides high hardness with excellent toughness for machining Ni based high temperature alloys such as Inconel, Waspaloy etc. Suitable for high feed rate and depth of cut.
Continuous cut
Light interrupted
Heavy interrupted
Edge Preparation and Recommended Applications
T-Land Sizes for Standard Items
For semi-finishing and
finishing
f < 0.2 mm/rev
E=0.03-0.04 (honing)
For semi-roughing and roughing
f > 0.2 mm/rev
T=0.1x20*
For roughing and interrupted cut
f > 0.2 mm/rev
TE= 0.1x20°+0.01-0.02 (honing)
NEW
TEST REPORT
Competitor
ISCAR
Workpiece Material
Inconel 718
Operation
External interrupted turning
Insert
RNG 190700 T IS35
RNG 190700 TE IS35
Cutting speed Vc (m/min)
270
270
Feed rate f (mm/rev)
0.25
0.25
Depth of cut ap (mm)
5
5
Coolant
Dry
Dry
Time in Cut (min)
3.33
6.30
Most suitable for use in the aviation, aerospace, oil and gas industries
When replacing ceramic whisker grades with ISCAR’s new grades, we recommend increasing the feed
If tool life is too short, cutting speed should be reduced
RPGX-Ceramic
Round Ceramic Inserts for Machining Nickel Based Alloys and Hardened Steel
Tools can be supplied on request
RNGN-Ceramic
Round Double-Sided Ceramic Inserts for Machining Cast Iron,
Nickel Based Alloys and Hardened Steel
RCGX-Ceramic
Round Ceramic Inserts for Machining Nickel Based Alloys and Hardened Steel
CNGN-Ceramic
80° Rhombic Double-Sided Ceramic Inserts with a T-Land for Machining Cast Iron,
Hardened Steel and Nickel Based Alloys
(1) Wiper edge configuration for finishing operations at high feeds
