Product Description

MT-APA is an epoxy-polyester powder coating primer especially designed for direct application on substrates that are sensitive to out-gassing, such as Hot Dip Galvanized steel, Metal spraying, Zamak, Cast steel, Aluminium, brass etc. MT-APA offers excellent flow, chemical and salt spray resistance, and resistance to mechanical damage. MT-APA is suitable for use as a primer for a variety of liquid topcoats, however it is recommended that pre-qualification tests for intercoat adhesion be carried out prior to use

Powder Properties

Pretreatment

For optimum coating performance the following pre-treatment is recommended prior to the application of MT-APA. The pre-treatment should be used in accordance with the supplier’s recommendations.

a) Aluminium Multistage chrome chromate or chrome phosphate

b) Galvanised Steel Multistage zinc phosphate or chromate

c) Steel Multistage zinc or iron phosphate

Application

MT-APA is suitable for corona electrostatic spraying. Tribo application is not recommended.

Note: Failure to comply with the recommended curing conditions may affect the adhesion of the topcoat and cause degradation of the system performance properties. Parts coated with MT-APA should not be handled if possible. If handling is unavoidable, clean lint-free gloves must be worn.