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Benefits of PVD Hard Coating:

Excellent layer uniformity; Very smooth sputtered coatings.
Provides protection of polished and structured tool surfaces; Reduction of form covering and overlays.
Improvement in quality:
Improvement of sliding characteristics and release properties; low coefficient of friction and resistance against high temperatures; thermal stability.
Increased resistance to wear and tear and hence cost saving in replacing tools.
Environmentally Friendly:
Non-toxic, non-hazardous and non-polluting process; the process uses water-cooled target, so little radiation heat is generated.
The coating has been safety tested for surgical devices and food processing.

What is PVD Hard Coating?

PVD hard coating uses a similar vacuum deposition coating method as the standard PVD coating. Both multi arc and magnetron sputtering coating technologies can be used for the PVD hard coating. The differences between PVD hard coating and the standard PVD coating are:

  • the materials enclosed in the vacuum chamber are heated to a maximum temperature of 500 Celcius.
  • the duration of the coating time is longer.

PVD hard coating is one of the best methods for optimising the hardness to residual compressive stress ratio. The vacuum deposition method coats the product with a film of hard refractory material 2-7 microns thick.


What materials are suitable for PVD Hard Coating?

Titanium hard coating can be used on certain materials, such as tool steel, carbine and stainless steel.


Types of PVD Hard Coating:

For the hard coating, we are currently able to provide: Titanium Nitride (TiN), Titanium Carbide (TiC), Titanium Carbo-Nitride (TiCN), Aluminium Titanium Nitride (AlTiN) or Titanium Aluminium Nitride (TiAlN), Chromium Nitride(CrN), Aluminium Chromium Nitride (AlCrN) and Chromium Aluminium Titanium Nitride (CrAlTiN) coating.

Below is a summary of the characteristics of the various coatings:


Types of Coating

Hardness (HV)

Thickness (μm)


Coating Temperature (°C)

TiNTitanium Nitride (TiN) has a micro-hardness of 2,000 – 2,750 HV, thickness of 2-5μm and is gold in colour. It is the most common hard coating in use and is ideal for prolonging tool life and allowing higher speeds.

2,000 – 2,750

2 – 5


~ 350

TiCTitanium Carbide (TiC) has a micro-hardness of 3,000 – 3,500HV, thickness of 2-5μm and is greyish-black in colour. It has excellent wear-resistant properties in machining of stainless and high speed tool steels.

3,000 – 3,500

2 – 5

Greyish- black

~ 500

TiCNTitanium Carbo-Nitride (TiCN) has a micro-hardness of 2,800 – 3,200HV, thickness of 2-5μm and is rose or grey in colour depending on the ratio of CN. TiCN offers a slightly higher hardness compared to TiN. It offers better performance in steels over HRc 40. It is primarily used to achieve enhanced abrasive wear resistance. TiCN has a lower limit for service temperature.

2,800 – 3,200

2 – 5

Rose or Grey

~ 450

AlTiN or TiAlNAluminium Titanium Nitride (AlTiN) or Titanium Aluminium Nitride (TiAlN) has micro-hardness of 2,900 – 3,300HV, thickness of 1.8 -3.5μm and is dark grey-black in colour. It is the most resistant to abrasion and forms the hardest coating. It is an ideal coating for high speed and high temperature applications. It is recommended for the machining of cast iron, hardened die steels up to HRc 60 and other heat resistant alloys.

2,900 – 3,300

1.8 – 3.5

Dark grey- black

~ 400 – 425

CrNChromium Nitride(CrN) has micro-hardness of 1,800 – 2,200 HV, thickness of 2-5μm and is silver-grey in colour. It offers greater resistance to temperature than TiN and is an ideal choice in high temperature environments. CrN is particularly suitable for use against copper based materials, aluminium alloys and low-alloy steels.

1,800 – 2,200

2 – 5


~ 350

AlCrNAluminium Chromium Nitride (AlCrN) has micro-hardness of 3,000 – 3,200 HV and is blue-grey in colour. It has an extraordinary wear resistance under extreme mechanical stress. It is commonly used for machining such as gear cutting tools, inserts, some punching and die cast.

3,000 – 3,200

2 – 5


~ 450

CrAlTiNChromium Aluminium Titanium Nitride (CrAlTiN) has micro-hardness of 2,750 – 3,500 HV, thickness of 2-5μm and is grey in colour. It is a coating suitable for applications where high chemical wear resistance is required. It has exceptional high temperature properties and the coating offers improvements in many applications, including dry machining of a wide range of alloy steels.

2,750 – 3,500

2 – 5


~ 400