John B. wrote:
Emanuel Berg wrote:
John B. wrote:

Galvanizing is the coating of steel (usually)
with zinc. Two common methods are by "hot
dip", immersing the object in a vat of molten
zinc, and plating which is an
electrical-chemical method of depositing zinc
onto a part. Generally speaking, hot-dip
results in the thickest coating.

Amazing, so galvanizing is zinc as well!

Perhaps "galvanized" is the hot dip,
"electro-galvanized" is the electro-chemical
method, and "zinc plated" is the zinc spray can
only it is done by a robot?

I believe that "plated" refers only to the electro-chemical coating of
zinc on whatever the base metal is. There is a process called "cold
galvanizing" which is simply a zinc rich paint.
"Zinc-rich paints contain 65-95% metallic zinc in dry film, with
92-95% being common".

Zinc plated directly onto steel provides a certain amount of cathodic
protection while the zinc rich paints often provide a lesser amount
protection..


So all these methods are coating which makes
then inferior to S/S as that is the entire
material (?), and it even has a "chromium oxide
layer" to protect it even more!

Not necessarily inferior. Hot dip galvanizing is quite often used in
heavy duty exterior constructions as it is long lived and much cheaper
then a stainless part.

Re Chromium oxide. The chromium oxide that forms on the surface of a
"stainless" steel item is what makes it non corrosive.
https://en.wikipedia.org/wiki/Stainl...eel#Properties

"The chromium forms a passivation layer of chromium(III) oxide (Cr2O3)
when exposed to oxygen. The layer is too thin to be visible, and the
metal remains lustrous and smooth. The layer is impervious to water
and air, protecting the metal beneath, and this layer quickly reforms
when the surface is scratched."

The irony of needing to school an ignorant "physics expert" Swede about
steel! Have the femi-socialist librarians removed all the
climate-destroying, male-dominated metals and engineering books? Or just too
scared to ask some of the supposed blue-collar zombies at the hardware
store's nuts and bolts isle?