Conversion Coatings

Protect Your Work and Maintain a Brilliant Finish.

engine parts coated with a phosphate coating
screws coated with a yellow/green chromate coating

Coating a metal surface is crucial to it's longevity, so treat your work with one of our coatings to ensure the best corrosion resistance.

Phosphate Coatings

Adding a phosphate conversion coating to the surface of your work can be one of the most important steps in ensuring a quality, durable finish.

Phosphate coatings are predominantly used for corrosion resistance in a number of applications such as prior to painting, environments rich in oil (e.g. Engines), or even cold forming processes. The products can be applied via spraying or immersion and can be used on aluminium and zinc amongst other metals.

Confederate Chemicals offer a range of phosphating solutions and ancillary treatments.


These are used by spray or immersion, where maximum gloss is required. They produce a lightweight amorphous coating. Iron phosphates are principally used to coat steel components, but they will produce light conversion coatings on aluminium and zinc. They are usually used with a detergent in multi stage cleaner/ phosphate lines.

SUPERFOS FD: Principally for use on steel. Fluoride modified for multi metal applications. SUPERFOS FD also contains surfactants for cleaning the work.

SUPERFOS FEL(F): Our highly concentrated product for maximum economy in use. SUPERFOS FEL(F) is not detergented as received. For use in steel only applications, or mixed metal lines. SUPERFOS FEL(F) is used in conjunction with SUPERFOS ADDITIVE where it is used as a cleaner/ phosphate.

SUPERFOS FHF: Principally used by immersion, SUPERFOS FHF is a "high build" iron phosphate to give heavier coating weights on difficult steels.

SUPERFOS TN: Is a titanium/iron phosphate principally used as an environmentally friendly alternative to chromating aluminium, can also be used for steel.


SUPERFOS CM: Calcium modified zinc phosphate for immersion use in steel coating lines, where a heavy alkaline cleaner or a strong acid pickle have been used prior to phosphating. SUPERFOS CM produces a soft "satin" coating of zinc/calcium phosphate.

SUPERFOS IM/R: Heavy duty zinc phosphate, typically run with "free iron" to give coarse and heavy coatings prior to staining and oiling operations,.

SUPERFOS TRC: Our most sophisticated pre paint phosphate, a manganese/zinc/iron "tricat" phosphate producing light weight coatings on steel and mixed metals.


HIFOS M/MHT: An acidic liquid of Specific Gravity 1.31 used by immersion to deposit a heavyweight iron-manganese phosphate coating on steel components. The fine uniform crystal structure acts as an ideal lubricant carrier for "running in" applications. It may be oiled to provide a corrosion resistant coating.

Chromate Coatings

Chromate conversion coating is commonly used for aluminum and zinc, alloys. It is primarily used as a corrosion inhibitor but also provides a great surface for the adhesion of subsequent coatings. The process uses chromic acid, also known as hexavalent chromium. Chromate conversion coatings are commonly applied to everyday items such as hardware and tools, and can usually be recognised by their distinctively iridescent, yellow/greenish-yellow colour, although some coatings can be transparent.

Our Federcrom range provide high quality chromating solutions.

Federcrom: A process used to produce amorphous chromate/oxide coatings on aluminium and it's alloys prior to organic finishing.

Federcrom PC: A three part process designed to produce chromate/phosphate coatings on Aluminium and It's alloys. These coatings can vary from light, clear conversions to heavy green coatings dependent upon operating conditions. Supplied as Federcrom PC, PC replenisher and PC accelerator.