Coating offered as non-toxic alternative to HCP

A new coating has been created which, according to its developers, provides comparable or better performance to hard chrome with none of the environmental issues.

Hardide-A meets strict new EU and US environmental standards and is said to provide comparable wear, corrosion, hardness, surface finish and substrate bonding properties compared to hard-chrome plating (HCP).

While HCP has been a mainstay of industrial coating in aerospace, heavy equipment, automotive and various other industries for many years, the hexavalent chrome salts used to produce it pose extreme health and environmental hazards.

According to Hardide Coatings, Hardide-A offers enhanced protection against corrosion, wear and chemically aggressive media. It also matches the standard thickness (50 to 100 microns) and hardness (800 to 1200Hv) of HCP, simplifying the transition.

The company has successfully completed the first of two test phases to approve Hardide-A as a replacement for HCP on an application for AgustaWestland.

If successful, the coating will be approved for use on a specific AgustaWestland helicopter rotor blade component.

Laura Hopperton

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