Medthin™ 33 CrCN

CrCN coating for all types of surgical instruments

Medthin 33 CrCN, is a unique coating that combines the excellent adhesion and fracture toughness of CrN with the low light reflection properties of AlTiN and makes it an ideal coating for all kinds of surgical instruments.

Technical data


Material Description

Chromium Carbon Nitride

Applicable on the following materials¹

all Stainless Steels, Titanium and Aluminium Alloys

Technologies of deposition




Thickness [µm]

1 to 4


Double phase, Cubic CrN and Amorphous C

Oxidation Resistance


Cleaning and Sterilization Resistance

High, all methods allowed


High, 80% visible light absorption

Electrical Conductivity


Antibacterial properties

20% CFU reduction - tested ISO 22196

Nanohardness [GPa]

12 to 16

Young Modulus [GPa]

180 to 250

Friction coefficient²

0.2 to 0.6

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 fracture toughness, Antireflection, low friction coefficient on light loads-ideal for instruments

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.