Zinc-Lanthane finish of anchor chain

[mait]

I've been looking for high strength 6mm anchor chain. G43 or G7 anchor chain is not sold in 6mm size in EU AFAIK.

I finally found that Kito Chain Italia produces zinc plated G8 lifting chain in 6mm size.
Product number CLSEN-6-Z,
WLL 1.12 tons

Here is the link:
https://www.kitochainitalia.com/prod...ns/classic-en/

Now the question:
Anyone knows what is the Lanthane finish they offer?
They decribe it as "Lanthane (zinc plated + top coat)"

[GordMay]

Lanthane is a passivation/conversion coating, for zinc plated steel, that extends it’s corrosion resistance.
It seems that there are a number of Zinc Lanthane passivation/conversion coating formulations, all based on trivalent chromium compounds, and mineral corrosion inhibitors (nanoparticles).
➥ http://www.trichemtech.com/pdfs/cove...iew-110121.pdf

ZINC LANTHANE AND TOPCOAT:
This is our most popular electro-deposited zinc finish and has a clear and shiny appearance. With standard thicknesses of 8-11 microns, it ensures standard thread fit, +600 hours salt spray to red rust performance, and has a guaranteed CoF of 0.15 +/- 0.03. It’s also RoHS and REACH compliant. This is an excellent option for parts requiring good thread fit, consistent CoF, and superior corrosion resistance (compared to traditional zinc finishes).
By way of comparison, their ZINC DICHROMATE PER ASTM B633 (yellow zinc) performs in the 96 hours to red rust range,
➥ https://jlanfranco.com/performance/surface-treatment/

[mait]

Thanks for information!
Sadly I realize this is not the chain I'm after. For longevity reasons I have to find hot dip galvanized chain, not plated one.