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Avantguard®: Superior Corrosion Protection

Our Hempadur Avantguard zinc epoxy primers are ideal for steel structures and buildings in tough environments where maintenance costs can be significant.

Superior corrosion protection leading to extended maintenance intervals are the drivers behind our innovative, award winning anti-corrosion technology.

Based on activated zinc technology, our patented Hempadur Avantguard zinc epoxy primers are proven to deliver superior corrosion protection compared to key competitors in the zinc-rich epoxy market. The superiority has been independently proven by third party laboratory neutral salt spray tests according to ISO 9227. In this test, steel protected with Avantguard produced a lower evolution of rust creep than the competitor zinc epoxy primers tested, assessed according to ISO 12944-6, when tested up to 3x the duration for C5-high environments. The unique formulation enhances the coatings’ mechanical strength and offers greater working tolerances, to set a new standard for protection in tough C4 and C5 corrosive conditions.

Avantguard is also fast drying for increased productivity. Substantially reduced over-coating intervals makes Avantguard best-in-class and at least 33% faster than competitor zinc-rich epoxies.

The coatings can be used in all types of applications, from offshore oil & gas installations to heavy duty industry manufacturing and infrastructure projects, and the easy-to-apply formulation makes them ideal for both large-scale production and maintenance.

Redefining protection, durability and productivity
The advanced corrosion protection, higher mechanical strength and improved application properties of Hempadur Avantguard coatings have been proven in extensive tests:

• Redefining protection: Reduced rust creep (ISO 20340) & Norsok M 501, revision 6) and superior corrosion resistance (ISO 12944)

• Redefining durability: Improved crack resistance (thermal cycling resistance test) and reduced cracking at low and high dry film thicknesses (NACE cracking test and Hempel welding test)

• Redefining productivity: High tolerance to different climatic conditions (application tests under extreme thickness, temperature and humidity)

 

The full overview of Avantguard® - watch the videos

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The Hempadur Avantguard® product range

•    Hempadur Avantguard® 750: Anti-corrosive protection in compliance with Norsok M-501 in a coating that retains its properties even at high dry film thicknesses

•    Hempadur Avantguard® 550: A fast-curing and easy-to-apply coating delivering anti-corrosive performance in compliance with ISO C5-I High

How Avantguard® works
Thanks to patented activated zinc technology, Avantguard® gives you novel 3-in-1 advanced corrosion protection:

•    High formation of zinc salts in the scribe area improves galvanic protection
•    Zinc salts throughout the film increase barrier properties to lower water permeability
•    Capturing chloride ions creates a powerful inhibition effect to combat rust creep

Avantguard®’s innovative formulation also results in improved mechanical strength, so it is much less likely to crack during operation than other coatings on the market.

The unique formulation
Zinc-rich primers have been around since the 1960s. But back in 2007, Hempel’s R&D team made an important discovery: only one-third of the zinc in a standard zinc epoxy protective coating has any anti-corrosive effect. Our team spent more than 8,000 hours in the lab to find an answer. The solution is the Avantguard® activated zinc technology, which uses a unique combination of zinc dust, hollow glass spheres and a proprietary activator to activate more zinc in the coating.

Contact

For further information, please contact the Avantguard team at

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