Detailed Product Description:
Alodine® 1500 is highly concentrated and is used to make-up large immersion
baths. A gallon of Alodine® 1500 will make a 100-gallon immersion bath.
This is a clear conversion coating. As with the more common Alodine® 1001,
Alodine® 1500, 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.
Like 1001, Alodine® 1500 is used when a silver-white aluminum appearance is
desired 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® 1500 methods and properties are defined by Mil-C-5541-F (Now AMS-C-5541)
and AMS-A-2473. This product is listed on QPL-81706 as certified for Class 3.
The best results are achieved on wrought alloys (machined billet aluminum alloys).
Good results can also be achieved on type 356 aluminum castings. 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.
Aluminum surfaces must be cleaned with a suitable etchant such as Alumiprep 33
or Metal Prep 79, followed by a water rinse.
To formulate bath, mix 1part Alodine® 1500 concentrate with 99 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
for about 24 hours, after which, surface is ready for paint.
Click here to download Material Safety Data Sheet (MSDS)
Click here to download Henkel Alodine 1500 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
Comes packed in either 1-pint or 1-quart HDPE lab-quality Nalgene bottle in heat-sealed poly bag.