Medthin™ 42 DLC

DLC coating for surgical instruments

Medthin 42 DLC is a multilayer coating with a Chromium Nitride (CrN) base layer followed by a thin interlayer made of WCC and a top  DLC (carbon) layer. The base layers confer to Medthin 42 DLC a high load carrying capacity and improved scratch resistance whereas the top layer in DLC confer high hardness and low friction making this coating the superior choice for coating surgical instruments.

Technical Data


Material Description

Multilayer DLC

Applicable on the following materials¹

all Stainless Steels, Titanium and Aluminium Alloys

Technologies of deposition




Thickness [µm]

1 to 5


Amorphous Diamond Like Carbon (top layer) on crystalline Cr+CrN+WCC base layers

Oxidation Resistance

Excellent resistance to chemical oxidation as far as utilization temperature remains <300°C

Cleaning and Sterilization Resistance

Very High, all methods allowed


80% visible light absorption

Electrical Conductivity

Poor Conductor

Antibacterial properties

Not Measured

Nanohardness [GPa]

20 to 28

Young Modulus [GPa]

180 to 240

Friction coefficient²


Adhesion Scratch Test, LC3 [N]


Adhesion Rockwell or Mercedes test³

Class 1,2, HF1-3

Roughness (as coated) [nm]


Corrosion resistance – Neutral Salt Spray

Max 2 hours

Biocompatibility data for instruments

Passed ISO 10993-5, ISO 10993-10, ISO 10993-11


Delivered per request

MAF at FDA in the USA


Most popular applications

High load carrying capacity, very high scratch resistance and low friction

¹for any other material please contact ionbond
²against 100Cr6 steel ball
³Method either by ISO 26443 or VDI 3198

The values given are approximations and may vary depending on the application, environmental factors and test protocols.