SiAlON Ceramics

SiAlON ceramic is a silicon nitride based ceramic combined with "Al" and "O". SiAlON ceramic offers excellent heat resistance, mechanical strength under high temperature, thermal shock resistance and wear resistance in addition to the toughness of silicon nitride.
SiAlON shows superb performance in high speed machining of high temperature alloys.

Machining of Inco 718

SiAlON Ceramics

SX7

Wear resistant SiAlON ceramic

SX7

Features
  • Better notching resistance compared to Whisker ceramics
    No need to program ramping
  • Better flank wear resistance compared to other SiAlON ceramics
    Superior performance vs. whisker ceramics under same conditions-even higher productivity at higher feed rates
  • Excellent thermal shock resistance
    High speed milling can be performed at 3000SFM or higher
Grade Work material Application Purpose Cutting speed (SFM) Feed
(IPR / IPT)
Depth of cut (inch) DRY WET
SX7 Heat resistant alloy Turning Rough scale 600-900 .004-.009 .040-.200  
Rough no scale 600-900 .006-.012 .040-.100  
Semi finish / profiling 600-900 .005-.010 .040-.080  
Grooving 500-900 .003-.006 -  
Milling - 2000-4000 .003-.005 .040-.100  
Seal (Inco 718 Finish)
  Comp. carbide Comp. Whisker SX7 Seal (Inco 718 Finish)
Shape VNGA333
Cutting speed
(SFM)
160 650 800
Feed (IPR) .0078
Depth of cut
(inch)
.020
  WET
Tool life 1 pass
NTK : SX7 7 min/pc
Competitor's
Whisker ceramic
15 min/pc
Competitor's
carbide
24 min/pc
Turbine case (Waspaloy semi finish)
RPGX45Turbine case (Waspaloy semi finish)
800 SFM
.012 IPR
Various DOC
WET
NTK : SX7 7.2 min
Competitor's
Whisker ceramic
5.3 min * Broken

SX9

Best grade for roughing Inco 718 with scale

SX9

Features
  • Excellent notch wear resistance
  • Better flank wear resistance compared to competitor's silicon nitride ceramics
  • Superior toughness compared to Whisker-reinforced ceramics
  • Best thermal shock resistance
  • Best grade for roughing Inco 718 with scale
Grade Work material Application Purpose Cutting speed (SFM) Feed
(IPR / IPT)
Depth of cut (inch) DRY WET
SX9 Heat resistant alloy Turning Rough scale 600-800 .008-.014 .040-.200  
Rough no scale 600-800 .008-.016 .040-.100  
Semi finish / profiling 600-800 .004-.012 .040-.080  
Milling - 1500-3500 .004-.006 .040-.100  
Housing (Inco 718 with scale)
  Comp. Whisker SX9 Housing (Inco 718 with scale)
Shape RCGX45
Cutting speed (SFM) 600
Feed (IPR) .005 .008
Depth of cut (inch) .100
  WET
NTK : SX9 * High productivity
Competitor's
Whisker ceramic
 
Ring (Inco 718 milling with scale)
  Comp. Whisker SX9 Ring (Inco 718 milling with scale)
Shape RNG45
Cutting speed
(SFM)
1200 700
Feed (IPT) .0027 .004
Depth of cut
(inch)
.010
  DRY
NTK : SX9 10 pass with high productivity
Competitor's
Whisker ceramic
5 pass

SX5

Best grade for roughing Waspaloy with scale

SX5

Features
  • Excellent notch wear resistance
  • Toughest SiAlON grade on the market
  • Better thermal shock resistance compared to Whisker-reinforced ceramics
  • Use SX5 where heavy scale or interruptions exist
Grade Work material Application Purpose Cutting speed (SFM) Feed
(IPR / IPT)
Depth of cut (inch) DRY WET
SX5 Heat resistant alloy Turning Rough scale 600-800 .008-.014 .040-.200  
Rough no scale 600-800 .008-.016 .040-.100  
Grooving 600-800 .003-.007 -  
Ring (Inco 718 with scale)
  Comp. Whisker SX5 Ring (Inco 718 with scale)
Shape RCGX45
Cutting speed (SFM) 850 800
Feed (IPR) .004 .010
Depth of cut (inch) .750-.100
  WET
NTK : SX5 1 pass with 2.5times higher productivity
Competitor's
Whisker ceramic
1 pass
Ring (Inco 718 with scale)
RCGX35Ring (Inco 718 with scale)
650 SFM
.008 IPR
.750-.100 DOC
WET
NTK : SX5 1 pass * Small Chipping
Competitor's
SiAION ceramic
1 pass * Was chipping a lot