Coating Recommendations

The following chart offers recommendations about the most appropriate coatings depending on the application:

	Drilling	Turning	Milling	Tapping	Sawing	Reaming Broaching
Steels	nACo µAlTiN	nACo AlTiN	nACRo AlTiN	µTiCN TiN	AlTiN TiN	nACo µAlTiN
Hardened Steels	nACo	nACo	nACo	nACo	nACo	nACo
Cast Irons	nACo µAlTiN	nACo AlTiN	nACo AlTiN	nACo AlTiN	AlTiN TiN	nACo µAlTiN
Aluminium (> 12% Si)	nACo TiCN	nACo TiCN	nACo TiCN	nACo TiCN	TiCN TiN	µAlTiN TiCN
Aluminium (< 12% Si)	TiCN	TiCN	TiCN	TiCN	TiCN TiN	TiCN
Super Alloys	nACRo	nACo	nACRo	nACRo	nACRo	nACo
Copper	AlTiN	AlTiN	AlTiN	AlTiN	AlTiN	AlTiN
Bronze, Brass, Plastics	TiCN TiN	TiCN TiN	TiCN TiN	TiCN TiN	TiCN TiN	TiCN TiN

Nanocomposite Coating Usage Recommendations

For some applications, specialized nanocomposite coatings will lead to far higher performance than traditional coatings.

	Drilling		Milling		Hobbing	Tapping	Reaming
	HSS	HM	HSS	HM			HSS	HM
Steels	nACRo	nACo	nACRo	nACRo	nACRo	µAlTiN	nACRo	nACo
Hardened Steels	----	nACo	----	nACo	----	nACRo	----	nACo
Cast Irons	nACRo	nACo	nACRo	nACo	----	nACo	nACRo	nACo
Alumunium (> 12% Si)	nACRo	nACo	nACRo	nACo	----	nACRo	nACRo	nACo
Supper Alloys	----	nACo	----	nACo	nACRo	nACRo	nACRo	nACo

Coating Properties

The following chart provides information about the properties of the various coatings available from ACS:

	Color	Nanohardness up tp [GPa]	Thickness [µm]	Friction (fretting) coefficient	Max. usage temperature [°C]
TiN	gold	24	1 - 7	0.55	600
AlTiN	black	38	1-4	0.7	900
µAlTiN®	black	38	1-4	0.3	900
TiCN	blue-grey	37	1-4	0.2	400
CrN	metal-silver	18	1-7	0.3	700
nACo®-G	violet-blue	45	1-4	0.45	1200
nACRo®	blue-grey	42	1-7	0.35	1100

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