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Polyester based powder coating MT-JA220G White

Product Description

MT-JA220G is a polyester based powder coating, formulated using TGIC and is designed for exterior exposure offering excellent light and weather resistance from a single coat finish.

Powder Properties

Chemical type Polyester TGIC
Appearance Smooth Matt
Particle Size Suitable for electrostatic spray
Specific gravity 1.60 ± 0.05 g/cm³
Film Thickness 75 – 100 microns
Coverage 8.3 m2/kg @ 75 microns
Storage Dry cool conditions below 25°C (open boxes must be resealed)
Shelf life 12 months
Stoving schedule

(object temperature)

10 minutes @ 200°C

Test Conditions

The results shown below are based on mechanical and chemical tests which (unless otherwise indicated) have been carried out under laboratory conditions and are given for guidance only. Actual product performance will depend upon the circumstances under which the product is used.

Substrate Cold Rolled Steel
Pretreatment Degreased panels (mechanical tests)

Zn/Mn phosphate steel (chemical tests)

Film Thickness 60 – 80 microns
Stoving Schedule 10 minutes at 200°C

Mechanical Tests

test results
Flexibility ASTM D522 5mm
Adhesion ASTM D3359 100%
Impact (direct ASTM D2794 50kgcm
Erichsen Cupping ISO 1520 >5mm
Gloss(@60°) ISO 2813 25 ± 5
Hardness (scratch) ASTM D3363 H
Reflectance Class DIN EN 16268 B

Pre-treatment

Steel surfaces to be coated must be clean and free from grease, mill scale and rust. For maximum protection, it is essential to pre-treat components prior to the application of MT-JA220G. Iron phosphate and zinc phosphate pre-treatment of ferrous substrates improve corrosion resistance. Aluminium substrates may require a chromate conversion coating.

Application

MT-JA220G can be applied using manual or automatic electrostatic spray equipment. It is recommended, that for consistent application and appearance, the product be fluidized during application. Unused powder can be reclaimed using suitable equipment and recycled through the coating system.

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