NTK Cutting Tools

SX9

Machines through scale on heat resistant alloys | Sialon ceramic

Excellent notch and flank wear resistant ceramic
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Best thermal shock resistance

Best grade for roughing heat resistant alloys like Inconel 718 with scale
Features
  • Sialon with excellent notch and flank wear resistance
  • Superior toughness compared to whisker ceramics
  • Best thermal shock resistance, perfect for milling applications
  • Best grade for roughing Inconel with scale
Tooling application

Heat resistant alloys
Turning / Milling / End milling: roughing operations

Grade characteristics
Why are Sialon ceramics so effective at high-speed machining of heat resistant alloys?

Silicon nitride (Si3N4) is combined with Aluminum (Al) and oxygen (O) to make SiAlON.
Sialon has needle-shaped particles similar to that of Silicon nitride.
The arrangement of these particles makes the material withstand the impact force during cutting.
The addition of the alumina improves its heat resistance characteristics.
The property advantages makes it perfect for machining heat resistant alloys.

Machining Inconel with scale
Milling Inconel
End milling Inconel
End milling gray cast iron
- - - Scroll the table - - -
Grade Material Operation type Machining Cutting speed (m/min) Cutting speed (SFM) Feed(mm/rev) Feed (IPR / IPT) DOC(mm) DOC(inch) Coolant
SX9 Heat resistant alloys Turning Roughing (scale or no scale) 180 – 240 600 – 800 0.20 – 0.35 .008 – .014 1.0 – 5.0 .040 – .200 WET
Profiling / Semi-finishing 180 – 270 600 – 900 0.15 – 0.30 .006 – .012 1.0 – 2.0 .040 – .080
Milling Indexable 450 – 1000 1500 – 3300 0.02 – 0.03 .0008 – .001 1.0 – 2.5 .040 – .100 DRY
End milling 300 – 1000 1000 – 3300 0.05 – 0.1 .002 – .004
Aircraft part (with scale)
Material :
Inconel718
Cutting speed :
180 m/min 600 SFM
Feed :
0.2 mm/rev .0079 IPR
DOC :
〜 0.6 mm 〜 .0236 inch
Coolant :
WET
SX9
2 pcs / corner
Competitor’s whisker
1 pcs / corner

SX9 is a significant cost advantage and double the tool life compared to competitor’s whisker insert.

Ring (with scale)
Material :
Inconel718
Cutting speed :
200 m/min 670 SFM
Feed :
0.1 mm/rev .0039 IPR
DOC :
2.5 mm .0984 inch
Coolant :
DRY
SX9
10 pass
Competitor’s whisker
5 pass

SX9 doubled the tool life compared to the competitor’s whisker grade.

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