Finding the right galvanising method is critical to prolonging part life, especially in harsh mining, construction, and marine environments.
ArmorGalv® Australia is the first plant of its kind in this country, boasting a corrosion resistant and abrasion resistant coating solution that helps increase part life – making this technology a must-have for those in the utility products, infrastructure, energy, construction, mining, oil and gas industries.
The advanced ArmorGalv® coating technology is called thermal zinc diffusion galvanising, which is a uniform, sacrificial, zinc-iron coating, applied to any ferrous item using a metallurgical vapour diffusion process.
In contrast to other galvanising methods, thermal zinc diffusion galvanising does not leave any areas of the product ungalvanised; this is because the formation of a zinc coating by means of diffusion is not hampered by the product’s geometry.
The ArmorGalv® Thermal Zinc Diffusion coating is a standard finish option for all Ferrous Metal Products and perfect for threaded bar, engineered fasteners, both high tensile and commercial grade.
Revolutionising the industrial metal products market
Becoming known as Galvanising 2.0, this uniform deposition coating is poised to revolutionise the industrial metal products and fastener market, with over 1,000 hours of corrosion resistance, no risk of hydrogen embrittlement, and no insignificant surfaces.
Traditionally, fasteners were coated to provide them with corrosion resistance and proper torque tension (coefficient of friction) characteristics, while trying to avoid inducing them with the catastrophic effects of hydrogen embrittlement.
Today, there is the added requirement and challenge, that the process of coating the fasteners be environmentally friendly, and that the resulting coating itself be nontoxic and chrome free.
Recently, major advances have also been made in thermal zinc diffusion technology to improve its efficiency and reproducibility.
Is there a specification covering armorgalv® coating?
The ArmorGalv® coating is covered by the Standards ASTM 1059 A / M and ISO 17668. Coating classes range from 20-120 microns, defining the target coating thickness. For the most common coating thickness of 50 micron, thickness variance is typically between 45-60 microns.
Will thermal zinc diffusion replace cadmium for anti-galling?
The main benefits of cadmium, which due to safety concerns has been banned virtually worldwide, were its anti-galling properties, and its ability to not ‘seize’ in the presence of its own corrosion products due to its inherent lubricity properties.
Due to increased hardness and wear resistant properties, thermal zinc diffusion provides good anti-galling properties, predominantly facilitated by the absence of free zinc at the outer surface.
Will topcoats adhere to armorgalv®?
ArmorGalv® is not pure zinc, it’s layers (phases) of zinc/ iron alloy, meaning the surface is not smooth like that of bright electroplated zinc, and that it has superior adhesion of powder coat, paint, rubber, silicates, or Xylan.
How environmentally friendly is armorgalv®?
The ArmorGalv® Thermal Diffusion process generates practically zero landfill material and results in a chrome-free nontoxic coating.
In 2006, the US Environmental Protection Agency awarded the ArmorGalv® process its prestigious MVP2 Award – the most valuable new technology award.
This is a sponsored editorial brought to you by ArmorGalv®, for further information go to www.armorgalv.com.au
