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Henkel Alodine 1001 Clear Chromate Conversion Coating #680-107
Henkel Alodine 1001 Clear Chromate Conversion Coating
Chemical Name:
Alodine 1001 Conversion Coating
Chromate Conversion Coating

Detailed Product Description:


This is a clear conversion coating. As with the more common Alodine® 1201,


Alodine® 1001, is also a registered trademark of Henkel Surface Technologies


and is a chemical treatment process for aluminum used to provide corrosion protection


and as a surface preparation for paint and adhesives. Sometimes called “aluminum


passivation,” it contains hexavalent chromium and is intended to provide corrosion


prevention even when left unpainted. 





Alodine® 1001 is used when it is desired to retain the silver-white aluminum appearance


Instead of the more typical gold color of the Alodine 1201 finish.





Chromate conversion is an excellent treatment method to prep aluminum prior to paint


or adhesives since it greatly enhances the ability of an organic coating to form a bond


with the aluminum substrate. Being a surface conversion treatment rather than a coating,


it will not alter the dimensions of the part.





It is frequently used on electrical and electronic equipment because it provides increased


corrosion resistance while remaining electrically conductive. 





The Alodine process produces a microscopic thin film commonly prescribed on aluminum


to provide the following surface characteristics:


  • High-adhesion surface preparation for paint


  • Improves corrosion resistance


  • Preserves electrical conductivity of surface


  • No change in dimensions





Specification & Certifications:


Alodine® 1001 methods and properties are defined by Mil-C-5541-F (Now AMS-C-5541)


and AMS-A-2474.  This product is listed on QPL-81706 as certified for Class 3.





Application Notes:


The best results are achieved on wrought alloys (machined billet aluminum alloys).


Good results can also be achieved on type 356 aluminum castings. Type 380 die


casting alloys do not alodine well, however. It should also be noted that the


chemical film is fragile immediately after processing and a 24-hour waiting time


before handling the parts is preferable.





Applications in which temperatures can reach over 120ºF can break down the corrosion resistance


of the coating. In comparison to anodizing, this chemical film is more fragile and


not generally recommended for high-use areas.





This is a clear coating that leaves the surface with the original aluminum appearance. 





Surface Preparation:


Aluminum surfaces must be cleaned with a suitable etchant such as Alumiprep 33


or Metal Prep 79, followed by a water rinse.





Immersion Process:


To formulate bath, mix 25 parts Alodine® 1001 concentrate with 75 parts of water. Immersion


time is 2 to 5 minutes. Application temperature can range from ambient up to 100ºF.


Rinse part thoroughly with water and allow to dry. Surface is ready for paint. 





Brush-On Process:


Alodine® 1001 solution may be applied by brush or sponge, by using diluted in a 1 to 1 ratio


with water. Assure surface remains fully wet during required contact time of 2 to 5 minutes.


Rinse part with water and surface is ready for paint. 1 quart treats about 100 sq. ft.







Comes packed in either 1-pint or 1-quart HDPE lab-quality Nalgene bottle with tamper-evident seal in heat-sealed poly bag.










Click here to download Material Safety Data Sheet (MSDS)





Click here to download Henkel Alodine 1001 Technical Process Bulletin





Click here to download copy of Mil-DTL-5541F





Click here to download copy of Mil-DTL-81706





Click here to download copy of QPL-81706









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