NTK Cutting Tools

SX5

Machine heavy scale & interruptions on heat resistant alloys| Sialon ceramic

Toughest SiAlON ceramic on the market
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First recommendation for machining through scale

Excellent notch wear resistance ideal for machining scale
Features
  • Ceramic with the highest fracture resistance
  • Best for machining where scale or interruptions exist
  • Best grade for roughing Waspaloy with scale
Tooling application

Finishing Heat resistant alloys
Turning / grooving through scale

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
Grooving Inconel
- - - Scroll the table - - -
Grade Material Operation type Machining Cutting speed (m/min) Cutting speed (SFM) Feed(mm/rev) Feed(IPR) DOC(mm) DOC(inch) Coolant
SX5 Heat resistant alloys Turning Roughing with scale 180 – 240 550 – 950 0.2 – 0.35 .008 – .014 1.0 – 5.0 .040 – .200 WET
Grooving 0.07 – 0.17 .003 – .007
Ring (Roughing with scale)
Material :
Inconel718
Cutting speed :
240 m/min 800 SFM
Feed :
0.25 mm/rev .0098 IPR
DOC :
2.5 mm .098 inch
Coolant :
WET
SX5
1 pass
Current tool (competitor’s whisker)
1 pass

High feed rate is possible because of SX5’s toughness.
It achieved 2.5 times more efficient results compared to the competitor’s whisker.

Aircraft part (Roughing with scale)
Material :
Inconel718
Cutting speed :
200 m/min 670 SFM
Feed :
0.2 mm/rev .0079 IPR
DOC :
2.5 mm .098 inch
Coolant :
WET
SX5
1 pass
Current tool (competitor’s Sialon ceramic)
1 pass Chipping

SX5 insert had more stable performance and no edge chipping compared to the competitor’s Sialon grade.

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