The PVD coating of TiAlN has good chemical stability and high
hardness
and excellent oxidation resistance and wear resistance. When processing high alloy steel, stainless steel, titanium alloy, nickel alloy, the lifetime of TiAlN-coated cutting tool is 3~4 times than the that of TiN-coated cutting tool. In the condition of high speed dry cutting, the best PVD coating is the TiAlN coating. It's performace is better than TiN by 4 times in the condition of high speed cutting.
The good tractility of the TiAlN coating is especially suitable for intermission cutting. Besides, the TiAlN doesn't have sharp angle firm and crisp effect and will not show the phenomena of flaking off in the condition of intermission cutting. The TiAlN coating can be coated on cast iron, stainless steel, nickel based high temperature alloy, Titanium alloy,tungsten carbide, golf heads, moulds etc. TiAlN suits high speed, dry or half dry cutting and cutting harden steel.
Coating |
Hardness(HV) |
Coefficient of Friction |
Internal stress |
Processing temperature(℃) |
Temperature of oxidation resistance(℃) |
Coating thickness(μm) |
Color of coating |
Titanium aluminium nitride(TiAlN) |
2400 ~2800 |
0.4 |
-1.5 |
450 |
800 |
1 ~ 5 |
dark purple |
The application condition of TiAlN
Cutting tools |
Material of products |
uncoated/other coating |
TiAlN coating |
Lifetime prolonged |
Drills |
Titanium |
1.5 hole |
5 hole |
3.3 times |
Drills |
17-4PH |
10 pieces：TiN |
25 pieces |
2.5 times |
high-speed steel - Cobalt milling cutter |
Titanium |
4 hours |
8 hours |
2 times |
high-speed steel milling cutter |
INCONEL |
6.5”：TiCN |
8” |
1.2 times |
Tungsten-carbon alloy milling cutter |
founded steel |
800 hours |
3400 hours |
4.3 times |
Tungsten-carbon dovetail groove cutter |
52100 |
1100 pieces：TiN |
2400 pieces |
2.2 times |
Tungsten-carbon alloy milling cutter |
Titanium |
500 pieces |
4400 pieces |
8.8 times |
Tungsten-carbon alloy milling cutter |
WASP alloy |
15”：TiN |
30” |
2 times |
