Atotech’s new passivate Tridur® ZnNi H5.2, combines high corrosion resistance with a flawless black appearance and a low environmental impact, specifically for fasteners and other parts in the automotive industry.
A black passivate which is applicable to alkaline and to acidic zinc-nickel surfaces, Tridur® ZnNi H5.2-can be plated on parts and easily combined with aluminium alloys and used in the automotive industry to minimise contact corrosion.
Like all of Atotech’s other passivates, this new passivate exceeds the requirements of DIN EN ISO 19598. The application of the smart additive system Tridur ZnNi H5.2 results in an extended lifetime compared to the market standard. This directly translates to reduced costs for customers, constituting a clear competitive advantage in the market.
“We are particularly proud that our automotive industry approved Tridur® ZnNi H5.2 complies with the REACH regulations for beyond the year 2021, because it is both, cobalt-free and fluoride-free,” comments Sabine Sengl, corrosion protection expert at Atotech.
Tridur ZnNi H5.2 forms a long lasting, homogeneously spread, deep black colour to surfaces at 12% -13% incorporation rates of nickel (well with OEM standards), ensuring a very high corrosion protection against red rust. Combined with Atotech’s sealers, the post dip Tridur® Finish 300 or Atotech’s zinc flake top coats, Tridur® ZnNi H5.2 offers remarkably high-levels of corrosion protection against white and red corrosion (240 / 720 h) according to DIN EN ISO 9227.
Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.
Alongside visiting numerous companies, exhibitions and conferences around the world, Claire has also interviewed high profile figures – focusing on key topics impacting the sector and making sure readers stay up to date with the latest developments within the industry.
