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TiAlN Coating
AlTiN coatings have high-hardness and low thermal conductivity
typically reducing the thermal stress imposed on the cutting edges.
AlTiN has a higher aluminum content than the TiAlN coating that results
in a coating with higher hardness that increases hot hardness and the
oxidational stability of the coating. As a result, this coating is ideal
for machining titanium and titanium alloys because it acts as an insulator,
translating the high heat to the chip and not to the insert. Subsequently,
the heat produced in the cutting process is carried away by the chip.
The faster speeds possible with AlTiN coatings not only boost productivity,
but also improve performance on gummy materials such as stainless steel,
high temperature alloys and low carbon steels by reducing cutting friction
and edge build-up. For turning, AlTiN coated inserts can run up to 100%
faster than uncoated grades and up to 40% faster than PVD TiN coated grades.
For milling applications, AlTiN coated inserts can machine up to
50% higher speed than uncoated grades and up to 20% higher feed rates
than conventional CVD (Chemical Vapor Deposition) coated inserts.
For those reasons, AlTiN coated insert grades are ideal for dry milling
and for high-speed turning, and are ideal for milling titanium and titanium alloys.
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| Features |
| Color of Coating |
Violet Black / Violet-Gray |
| Coating Hardness |
2800 ~ 4500(HV) |
| Coefficient Friction |
0.6 ~ 0.7 |
| Coating Thickness |
1 ~ 5(μm) |
| Thermal Stability |
> 800ºC |
| Coating Temperature |
500ºC |
TiAlN Film |
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FCVA
