"Alodine" is a Henkel trade name for their line of chromate conversion coatings for aluminum and light metals. ... No, chromate conversion coating is not applicable to bare steel, although steel may be zinc plated and then have a chromate conversion coating applied.

Is alodine used on steel?

Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium, magnesium, and tin alloys.

What can steel be coated with?

Sheet steel is coated with metallic and non-metallic coatings to provide barrier protection against corrosion, extend product lifetime, and improve appearance. Coating materials include paint, zinc, cadmium, aluminum, chrome, nickel, nickel-chromium, iron oxide, and silver.

Is alodine corrosive?

Alodine. Alodine is a chemical treatment of aluminum to prevent corrosion, it is electrically conductive and can be used as a primer for layers of paint. It does not add weight or changes dimensions of the part that is being treated, where as paint does.

Can you Chem film steel?

Steel and iron are not compatible with chem film when applied directly. But zinc-plated steel can be treated with chem film to achieve added durability and protection against white corrosion. On iron substrates, a chromate conversion coating can be added to improve the durability of a phosphate conversion coating.

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15 related questions found

Is alodine 1200 conductive?

Alodine 1200S conforms to MIL-C-5541E Class 1A and 3 coatings, Methods A, B & C application. Alodine coatings are electrically conductive.

Is alodine coating conductive?

In addition to electrical conductivity, Alodine coatings offer thermal conductivity and are used in applications such as heat sinks. Chromate conversion coatings such as Alodine are an effective solution for aluminum alloys when both corrosion resistance and conductivity are important.

Is alodine toxic?

It contains material which can cause cancer. The compound contains chromium, which may cause allergic reactions. Exposures in large quantity may lead to kidney damage, failure and eventually death. If swallowed this product can cause corrosive damage to the gastrointestinal tract.

What is the purpose of alodine?

Chem film or Alodine is a chemical conversion coating that's mostly used to protect aluminum from corrosion. It's primarily used to passivate aluminum as it protects this metal and serves as a base for paint coatings. It leaves aluminum unaffected, so it's easier to put paint over it without changing anything.

How long does alodine last?

Alodining is a process in which a metal is coated with a chemical called alodine. This coating hardens to the surface and can last for years if painted, not requiring reapplication.

What is a metallic coating?

Metallic coatings contain a metallic element or alloy. Metallic coatings can be applied by using a sprayer, electrochemically, chemically or mechanically. These coatings are applied on equipment requiring a shiny or glossy appearance and protection from sunlight, corrosion and oxidation.

What is metallic coated steel?

Metallic coated steel can be defined as a steel substrate coat ed with a layer of zinc, a zinc/aluminium alloy, a zinc/silicon alloy or pure aluminium. ... Metallic coated steel is certainly the product best able to meet present and future environmental regulations.

What is the best metal coating?

What are the Best Industrial Coatings for Structural Steel?

• Epoxy Steel Coatings: Epoxy coatings are one of the most widely used steel coatings in industrial and marine markets. ...
• Polyurethane Steel Coatings: Polyurethane coatings are often used as topcoats over epoxy primers on structural steel. ...
• Zinc Coatings:

Can alodine be removed?

Synopsis: Very fresh chem-film (Alodine, Iridite, chromate conversion coating) can be softened with 50% nitric acid, then wiped from aluminum [credit Max Stein & Brian Terry].

How do you apply alodine coating?

Mix 22.5 grams of Alodine 600 with each litre of water. Stir well until the powder is dissolved. Note: A small amount of insoluble material may settle out of solution; this can be disregarded. The work, after processing and drying, is ready for use either painted or unpainted.

What is gold alodine?

Awlgrip Alodine 1201 Is A Chrome Conversion Coating for Aluminum. It Is A Non-flammable, Chromic Acid Based, Coating Chemical That Will Produce A Chrome Conversion Coating on Aluminum And Its Alloys. This Coating Is Gold to Tan In Color And It Becomes A Part of The Aluminum Surface.

What is the difference between anodized and alodine?

The primary difference between Alodine (chem film) and anodizing is that anodizing is an electrolytic process and Alodine (chem film) is not. Alodine (chem film) and anodizing are both processes used in aluminum finishing to improve corrosion resistance. Both transform the outer layer of the surface of the metal.

Who makes alodine?

Alodine is actually a brand. It is an international brand of various materials from Henkel Technologies for use in conversion, anodizing and functional coatings that are suitable for use on aluminum, magnesium and other non-ferrous materials for corrosion protection and paint adhesion.

Can you alodine titanium?

All Henkel products are OEM specified. Alodine® conversion coatings for light metals, such as aluminum, magnesium and titanium.

Is alodine flammable?

Clothing contaminated with ALODINE 1201 can become dangerously flammable. Immediately remove contaminated clothing and rinse thoroughly with water. Contact of combustible material with ALODINE 1201 may cause fire. ALODINE 1201 contains chromic acid in excess of 0.1 percent.

What is alodine1200?

Alodine® 1200 S is a powdered chemical used to produce a. protective coating on aluminium which ranges in colour from light iridescent golden to tan. The process is operated at room temperature. The coating produced minimizes corrosion and provides an improved bond for paint.

What is the difference between Iridite and alodine?

A. Iridite is a trade name for a whole family of chromate conversion coatings. Alodine 1200S is the trade name for aluminum chromate that meets MIL-C-5541. Iridite 14-2 is the particular trade name for a product that is chromate conversion for aluminum.

What is mil a 8625?

Military specification MIL-A-8625 is the model spec for many components that need anodized for the military and/or aerospace industry. The specification covers all the requirements needed for six types and two classes of electrolytically formed anodic coatings on aluminum and aluminum alloys.

How thick is alodine coating?

Aluminum chromate conversion coatings, often referred to as chemical film or under the trade names Alodine or Irridite, produce a thin coating in the range of 0.00001-0.00004 inches in thickness. Aluminum chromate conversion coatings are amorphous in structure with a gel-like composition hydrated with water.

Is Alocrom 1200 banned?

The hexavalent chromium based Alocrom 1200 which is a process we have used for many years is now on the B/T/R list (Banned / Targeted / Restricted). Unlike your previous posts, this is a through-life toxicity consideration.