SX3Roughing & semi-finishing heat resistant alloys | Sialon ceramic

First recommendation for heat resistant alloys machining

Covers wide range of machining: Roughing with scale to semi-finishing

High-speed turning and milling with stable performance

Product video


  • Ceramic grade combining toughness and wear resistance
  • Machines wide range of conditions in materials from the commonly used heat resistant alloys like Inconel 718 to the newer generation of materials like Rene
  • Performs high efficiency milling

Tooling application

Finishing Heat resistant alloys
Turning / Profiling / Milling: Roughing with scale to semi-finishing

Grade characteristics

Cutting conditions

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Grade Material Operation type Machining Cutting speed (m/min) Feed(mm/rev) DOC(mm) Coolant
SX3 Heat resistant alloys Turning Roughing with scale 180 - 250 0.10 - 0.22 1.0 - 5.0 WET
Roughing 180 - 250 0.15 - 0.30 1.0 - 2.0
Profiling / Semi-finishing 180 - 270 0.12 - 0.25 1.0 - 2.0
Grooving 150 - 250 - 1.0-2.5
Milling Indexable 600 - 1200 0.10-0.15 0.09-0.25 DRY

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

Case study

Rene130 Roughing with scale
Material :
Insert Shape :
Cutting speed :
115 m/min
Feed :
0.15 mm/rev
Coolant :


SX3 insert machined through the scale and inspection yielded no defects on insert edge.
Competitor's Sialon insert evaluation yielded visible breakdown of cutting edge after same machining operation.
Semi-finishing Rene 130
Material :
Insert Shape :
Cutting speed :
100 m/min
Feed :
0.25 mm/rev
Coolant :


SX3 and SX9 both maintained good edge conditions after cuts while the competitor's Sialon insert exhibited signs of significant wear.

Tool lineup

View Catalog Information

Please check product catalog for tooling lineup