Powder coatings for coil springs and torsion bars

Product details

Product Description

MT-A1242 powder coating has an excellent line of coatings for coil springs, and torsion bars essential to the safe performance and comfortable ride of today’s car and truck chassis systems. MT-A1242’s single layer systems offer unyielding performance in corrosion and chip resistance balanced with excellent application efficiencies. Our patented Super Single Coat for coil springs offers superior corrosion protection and critical chip resistance to bring you the most economical and responsible choices in coatings for high performance, high tensile springs.

Powder properties

Chemical Type	Epoxy
Area of usage	Automotive suspension springs
Appearance	Smooth
Gloss level (60°)	>40 GU
Colour	Black
Recommended Film Thickness	330 – 380 µm (13 – 15 mils)
Density (g/cm3)	1.41 ± 0.05 (calculated) 0.9 – 1.2 (measured, cured film)
Gel time (at 200 °C)	36 – 54sec
Application	Electrostatic
Storage	Under dry, cool (<21°C) conditions
Shelf life	10 months from the production date
Curing schedule (at object temperature)	25 minutes at 150°C (time at object temperature) 25 minutes at 300°F (time at object temperature)

Mechanical Tests

Adhesion	DIN EN ISO 2409	Gt 0
Pencil Hardness	TSH1539G	B
Erichsen cupping	DIN EN ISO 1520	≥ 8 mm
Impact resistance	DIN EN ISO 6272	≥ 140 ip (direct) ≥ 140 ip (reverse)

Test Conditions

Testing has been determined under laboratory conditions using the following application properties and is for guidance only.

Substrate	Steel panels CRS ACT B958 P90
Pretreatment	Zinc Phosphate
Film thickness	330 – 380 µ (13 – 15 mils)
Cure schedule	20 minutes at 160°C

Actual film performance will depend on the individiual circumstances in which the product is used.

Pre-treatment

Steel surfaces to be coated must be clean and free from grease. For maximum protection it is essential to pre-treat components prior to the application of MT-A1242. Iron Phosphate and Zinc Phosphate of ferrous metals improve corrosion resistance.

Application

MT-A1242 powders can be applied by manual or automatic electrostatic spray equipment. It is recommended that for consistent application and appearance product be fluidized during application. Unused powder can be reclaimed using suitable equipment and recycled through the coating system.