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ISO-TURN
NPA 14/2019



ISO-TURN

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

GradeVc
m/min
Feed
m/rev
Depth of
Cut mm
ApplicationFeatures
IW7200-4000.1-0.30.5-2.5Whisker-reinforced ceramic grade, provides high hardness with excellent toughness for machining Ni based high temperature alloys such as Inconel, Waspaloy etc.
IS25200-3500.1-0.41.0-4.0Reinforced SiAlON composite grade, Excellent for machining Ni based high temperature alloys such as Inconel, Waspaloy etc.
IS9180-2300.1-0.31.0-3.0A very tough grade with high cutting edge stability. Used for roughing to finishing applications on Ni based high temperature alloys and ductile cast iron.
IS35150-2500.2-0.51.0-4.5SiAlON 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 cutLight interruptedHeavy 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


CCLNR/L
Clamp Lock Tools Carrying the Ceramic Negative 80° Rhombic Inserts



CRDNN
Clamp Lock Neutral Tools Carrying Ceramic Round Negative Inserts



CRGNR/L
Clamp Lock Tools Carrying the Ceramic Round Negative Inserts



CRGCR/L
Clamp Lock Tools Carrying Ceramic Round 7° Positive Inserts
* Optional, should be ordered separately


CRDCN
Clamp Lock Neutral Tools Carrying Ceramic Round 7° Positive Inserts



The NPA014-2019's pdf file: View (PDF) or Download (ZIP)
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