Hempel's Marine Paint Specifications

Written by robert alley
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Hempel's Marine Paint Specifications
Ships require special paint to combat the elements. (Ships image by Monika 3 Steps Ahead from Fotolia.com)

From its origins in Denmark in 1915, Hempel has grown to be recognised as one of the top brands in marine paints with 20 factories worldwide. Upon the death of its founder, J.C. Hempel, ownership passed to the J.C. Hempel Foundation that supports artistic, charitable, cultural, humanitarian and scientific endeavours. Hempel manufactures a wide variety of paints with colours as shown on the Marine Colour Chart.

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Hempadur 1540 epoxy paint is applied in a marine setting to tank lining on ships. Hempadur Ultra-Strength 47500 produces an abrasion and corrosion resistant coating after application with standard heavy-duty airless spray equipment on hatch coverings and cargo holds. The Multi-Strength Hempadur 35530 epoxy paint provides protection from seawater, fresh water, crude oil and abrasion, and should be applied in thick coats on steel with the airless spray. For this paint, full colour retention is of secondary importance to the protection from abrasion and other elements. Hempalin Deckpaint 53240 fills the need for decks and stairways that need a mildly corrosive interior and exterior finishing.

Service Temperature

White and light red Hempadur 1540 has a maximum service temperature of 140 degrees Celsius under dry conditions and 50 degrees Celsius under wet conditions. The maximum service temperature refers to the point at which the paint could chalk (or powder) from weathering, and become more sensitive to mechanical damage or chemical exposure. Ultra-strength Hempadur 47500 in red and grey has a service temperature only under dry conditions of 140 degrees Celsius. The red and grey multi-strength 35530 Hempadur under dry conditions has a service temperature of 140 degrees Celsius and for fresh water steel, 35 degrees Celsius. The green and red Hempalin deckpaint 53240 under dry conditions is rated for 120 degrees Celsius.

Drying Time

Hempadur 1540 semi-flat paint takes 3 hours to dry at 20 degrees Celsius, but takes 8 to 10 hours to dry to the touch. Fully cured, or ready to be placed into service, requires 7 days. For the Hempadur ultra-strength 47500 semigloss, 3 hours allows the paint to be dry to the touch, while 7 days are necessary to be fully cured. The 35530 Hempadur multi-strength dries to the touch in 24 hours, and also requires 7 days to be cured. The Hempalin Deckpaint 53240 only requires one hour to dry to be fully cured.

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