SA30
Roughing & semi-finishing heat resistant alloys｜
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
| Cutting conditions
| Grade | Material | Operation type | Machining | Cutting speed (m/min) | Feed(mm/rev) | DOC(mm) | Coolant |
|---|---|---|---|---|---|---|---|
| SA50 | Heat resistant alloys | Turning | Roughing (scale or no scale) | 180 – 240 | 0.20 – 0.35 | 1.0 – 5.0 | WET |
| Profiling / Semi-finishing | 180 – 270 | 0.15 – 0.30 | 1.0 – 2.0 | ||||
| Milling | Indexable | 450 – 1000 | 0.02 – 0.03 | – | DRY | ||
| End milling | – | 300 – 1000 | 0.05 – 0.1 | – |
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
| Case Study
| Aircraft part (with scale) | |
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| SA50 |
2 pcs / corner |
| Competitor’s whisker |
1 pcs / corner |
SA50 is a significant cost advantage and double the tool life compared to competitor’s whisker insert.
| Ring (with scale) | |
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| SA50 |
10 pass |
| Competitor’s whisker |
5 pass |
SA50 doubled the tool life compared to the competitor’s whisker grade.
