Zinc Flake

p>Zinc Flake is a non-electrolytic plating process which offers very high corrosion and chemical resistance. As a result, there is a low risk of hydrogen embrittlement which makes it particularly suitable for fasteners with a tensile strength greater than 320 HV.


Some of the most common finishes are shown below however there are many different systems available. Contact us if you don't see the finish you are looking for.

Finish Thickness White Rust Red Rust Appearance Typical Applications
Dacromet® 320/500 Grade A*   >240 hours >600 hours Silver  
Geomet® 500 A 6 microns   >600 hours Silver  
Geomet® 500 B 8 microns   >1000 hours Silver  
Delta®-Tone and Seal 8 to 12 Microns   480 hours Various Colours  
Delta Protekt® 8 to 12 Microns   840 hours Various Colours  
Magni 565® 13 Microns 480 hours 1000 hours Various Colours  
Magni 577® 12 to 20 Microns 480 hours 1000 hours Black  
Zintek® + Techseal® 8 to 12 microns 240 hours 1000 hours Various Colours  


*Dacromet® may contain Cr6+

Delta®-Tone & Delta Protekt® are tradenames of Dörken MKS
Dacromet® and Geomet® are tradenames of NOF Metal Coatings
Magni 565® is a tradename of Magni Group
Zintek® and Techseal® are trademarks of Atotech

Performance results are approximate only and are based on laboratory salt spray tests

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.