IS25 and IS35
New SiAlON Ceramic Grades for Machining High-Temperature Alloys
Highlights
ISCAR is introducing the IS25 and IS35 new SiAlON ceramic grades for machining high- temperature alloys.
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 and semi-finishing operations
Can be used with similar machining conditions such as whisker-reinforced grades
Price advantage over the whisker reinforced grades
IS25
IS35
Recommended Cutting Conditions for Ceramic Grades
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
For semi-roughing and roughing
f > 0.2 mm/rev
Applications
Aviation, aerospace and medical equipment industries.
When replacing whisker grades with ISCAR’s new grades, we recommend increasing the feed.
If tool life is too short, the cutting speed should be reduced.
Note: ISCAR is phasing out all turning inserts made from grade IS9, including the following items:
Cat.No.
Description
5795452
CNGN 120408E
IS9
5720017
CNGN 120412E
IS9
5720019
CNGN 120708E
IS9
5720020
CNGN 120712E
IS9
5720021
CNGA 120408E
IS9
5720015
RNGN 120400E
IS9
5720013
RNGN 120700E
IS9
5607362
RNGN 120700T
IS9
5794540
RNGN 120700T01020
IS9
5798896
RNGN 190700T01020
IS9
5701808
RNGX 1207 CH
IS9
5796533
SNGN 120408E
IS9
5720016
SNGN 120416E
IS9
5720022
TNGN 160408E
IS9
5720023
TNGA 160408E
IS9
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
