The difference between the nACo Coating & Blue Nano Coating

2025-09-23

What is nACo Coating

nACo is a nanocomposite coating developed by PLATIT and other coating suppliers.
It is mainly composed of Al–Ti–Si (Aluminum–Titanium–Silicon), sometimes with a TiN adhesion layer.

Key Features of nACo:

Property	Typical Value / Description
Hardness	~39–41 GPa nano-hardness
Thickness	1–4 µm
Max Working Temperature	Up to ~1200 °C (depending on the variant)
Friction / Adhesion	Strong adhesion to substrate, reduces material sticking, improves wear resistance

“nACo Black Coating" usually refers to the dark gray/black appearance version of the nACo nanocomposite. The chemistry is the same, only the color varies slightly due to composition or process.

What is Blue Nano Coating

“Blue Nano" is not a standardized coating type but rather a common marketing name used by us.
In many cases, it is also based on AlTiSiN or similar high-hardness nanocomposite ceramic coatings, offering high hardness, heat resistance, and long tool life.
The blue/violet appearance is often emphasized as a selling point.
Quality varies: some Blue Nano coatings perform similarly to nACo, while others may only have the blue look without the same level of performance.

Comparison: nACo (Black) vs Blue Nano Coating

Feature	nACo (Black / Standard)	Blue Nano (Common Marketing Term)
Composition	Defined Al–Ti–Si nanocomposite (AlTiSiN family)	Usually AlTiSiN or similar, but not standardized
Color	Dark gray / black	Blue or blue-violet
Hardness & Heat Resistance	~39–41 GPa, up to ~1200 °C	Claimed high hardness & heat resistance, but varies by supplier
Wear Resistance / Tool Life	Excellent, proven in hard materials and high-speed cutting	Claimed improved tool life, actual performance depends on quality
Friction / Anti-Sticking	Very good, reduces built-up edge	Similar claims, but performance varies
Consistency / Cost	Well-established, stable quality, higher cost	Quality inconsistent; some are close to nACo, others mostly cosmetic, usually lower cost

Conclusion

nACo Black Coating: Premium, stable performance, ideal for demanding applications (high speed, high temperature, hard materials).
Blue Nano Coating: May offer good performance but quality is inconsistent. Sometimes comparable to nACo, but sometimes only “blue in color" without the same durability.
Recommendation:
1. For tough applications → Choose nACo.
2. For general machining or cost-sensitive jobs → Blue Nano may be sufficient.

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