Medthin™ 40 MeDLC

MeDLC coating for complex shape parts

Medthin 40 “Metal Diamond Like Carbon” , is a low surface roughness coating based on Carbon amorphous phase embedding the crystalline crystals of Tungsten Carbide. The coating is harder than Medthin 33 CrCN and it can be declined in grey or black color. The advantage of “Metal DLC” coatings is that they are easier to apply to complex geometries and rough surface preparations due to their low hardness and high ductility keeping a very low friction coefficient. Ideal when a high confidence of coating adhesion over the entire complex shape parts is required combined with good mechanical performance.

Technical Data


Material Description

Tungsten Carbide Carbon (WCC)

Applicable on the following materials¹

all Stainless Steels, Titanium and Aluminium Alloys

Technologies of deposition



Grey or black

Thickness [µm]

1 to 10


Double phase, WC and Amorphous C

Oxidation Resistance


Cleaning and Sterilization Resistance

High, all methods allowed


50%-80% visible light absorption

Electrical Conductivity


Antibacterial properties

Not Measured

Nanohardness [GPa]

10 to 18

Young Modulus [GPa]

180 to 250

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 fracture toughness, Low roughness, 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.