<< I sometimes wonder if one of the factors re rust is the luck of the draw re steel quality at manufacture. I've know very similar cars over the years that have fared very differently re rust. >>
You probably remember the time - I think it was the 1980s - when some Japanese makes used notoriously bad steel for rusting ?
Alfasud's were notorious for rusting, it was believed the steel was badly recycled scrap and salt air from the coast.
I thought it was because they were Italian.
There was a story that the Sovs paid Fiat for the Lada with dodgy steel which then compromised all their products, but they didn't seem to have too much difficulty rusting before that.
"Best estimates show that quantities of copper arising from conventional scrap preparation can be managed in the global steel system until 2050 assuming perfectly coordinated trade and extensive dilution, but this strategy will become increasingly impractical."
pubs.acs.org/doi/10.1021/acs.est.7b00997
The 2050 estimate assumes no action to limit blast furnace production, though, and this might be required due to GHG concerns, in which case the copper cutoff will be reached sooner.
I dunno if copper contamination s a big issue with cars though. Though copper does vary in the scrap stream, and one might expect it to lead to electrochemical corrosion, the main industrial concern seems to be cracking when rolled.
This perhaps makes it unsuitable for pressed-steel components, which cars mostly are. The same paper claims scrap makes up only about 10% of steel used in cars, though of course that'll be an average
Edited by edlithgow on 24/08/2022 at 02:08
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