NTK Cutting Tools

SX3

Roughing & semi-finishing heat resistant alloys | Sialon ceramic

First recommendation for heat resistant alloys machining
Home / HRSA - Grade / SX3

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

High-speed turning and milling with stable performance
Features
  • 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
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
- - - 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
SX3 Heat resistant alloys Turning Roughing with scale 180 – 250 600 – 1000 0.10 – 0.22 .004 – .014 1.0 – 5.0 .040 – .200 WET
Roughing 180 – 250 600 – 1000 0.15 – 0.30 .006 – .016 1.0 – 2.0 .040 – .100
Profiling / Semi-finishing 180 – 270 600 – 1000 0.12 – 0.25 .004 – .012 1.0 – 2.0 .040 – .080
Grooving 150 – 250 500 – 900 0.09-0.25 .003 – .012 1.0-2.5 .040 -.100
Milling Indexable 600 – 1200 2000 – 4000 0.10-0.15 .004 – .006 DRY
Rene130 Roughing with scale
Material :
Rene130
Insert Shape :
SNGN190724
Cutting speed :
115 m/min 380 SFM
Feed :
0.15 mm/rev .0059 IPR
Coolant :
WET
SX3
10.0min

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 :
Rene130
Insert Shape :
RCGX120700
Cutting speed :
100 m/min 330 SFM
Feed :
0.25 mm/rev .0098 IPR
Coolant :
WET
SX3
10.0min

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

Related News
April 23, 2025
In aerospace manufacturing, where precision and efficiency are critical, NTK is revolutionizing machining with its ...

For more information about this product, visit our online e-catalog, or download the catalog/product report

About
Solutions & Products