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The Global Cost of Corrosion

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Re: The Global Cost of Corrosion

#131

Post by bliteben »

ElectricalUnion wrote: post #61
bliteben wrote: post #18

Earlier quoted context omitted.

Almost all metals oxidize. You could build something out of gold or maybe platinum and avoid oxidation, but it would obviously be expensive. The U.S. navy does have some very large aluminum ships such as the Independence Class[1]. These ships are apparently having some teething issues, but it is quite the feat to have a 414 ft long aluminum ship that can go upwards of 50 knots. [1] : https://en.wikipedia.org/wiki/Ind…

> Almost all metals oxidize. > The U.S. navy does have some very large aluminum ships Unfortunately aluminum also rusts, it just happens to be a chemically stable and resistant rusting - but not in a stable enough manner to be mechanically/abrasive resistant, that's why you don't see them deployed in widespread use at stressing conditions like internal combustion engine blocks or fast ship hulls. From said cited Wiki…

sorry I annoyed you. I thought I covered both in my post. Feels like you have to walk on egg shells around here least someone correct you.

Re: The Global Cost of Corrosion

#132

Post by jacquesm »

wbsss4412 wrote: post #118
jacquesm wrote: post #89

Earlier quoted context omitted.

> I never meant to say that Volvo isn’t Chinese. Accepted. > It’s just odd that people really feel the need to bring it up, despite the fact that operationally little is different. It was merely for completeness' sake, and to indicate that since the days that Volvo pioneered this sort of thing the company had changed ownership. > It’s Chinese in the same way that Jeep/ram/dodge/Chrysler are Dutch now. That's a tax do…

Stellantis really is a European company, which was the point. I felt the need to choose a country so I chose where they’re headquartered. Regardless, most people would identify those brands as “American” cars, which was the overarching point.

> Regardless, most people would identify those brands as “American” cars, which was the overarching point.

Yes, car brand ownership is a mess. So if you want to buy an American car, I think your options are limited to Tesla.

Re: The Global Cost of Corrosion

#133

Post by [deleted] »

justinator wrote: post #126
mattnewton wrote: post #100

Earlier quoted context omitted.

Isn’t it reuse? Reduce - don’t buy another car, reuse - keep using your car, or buy a used car, recycle - sell your old car for scrap.

Perhaps we should add, "Reconsider" as in, "Reconsider purchasing the item, when it's not needed, or a better alternative exists".

[deleted]

Re: The Global Cost of Corrosion

#135

Post by game-of-throws »

justinator wrote: post #126
mattnewton wrote: post #100

Earlier quoted context omitted.

Isn’t it reuse? Reduce - don’t buy another car, reuse - keep using your car, or buy a used car, recycle - sell your old car for scrap.

Perhaps we should add, "Reconsider" as in, "Reconsider purchasing the item, when it's not needed, or a better alternative exists".

Is there a difference between "reconsider" and "reduce"?

Re: The Global Cost of Corrosion

#136

Post by jacquesm »

algo_trader wrote: post #123
jacquesm wrote: post #119

Earlier quoted context omitted.

> that you want to last in sea water? How long? Under what kind of load?

Well, the payload has a 20 year life time. Solar panels, navigational lights, etc. Hopefully very little physical contact with other man made objects. A decade of sea life before some sort of land refurbishment would be a nice value for the excel.

Is aluminum an option for your structural loads? If so I would pick that before I'd even look at steel. Check out 6061 if that will work for you.

Here is a nice little article comparing two common marine grade aluminum alloys:

https://www.marinealu.com/a/marine-grade-aluminium-5083-vs-6...

Re: The Global Cost of Corrosion

#137

Post by legulere »

jtlienwis wrote: post #4

The environmentalists killed a zinc mine in my state due to pollution concerns. Of course every pound of zinc not mined meant more steel without zinc protection, and hence more rust and more mining of iron ore. Arguments like this were completely lost on them.

You can recycle rusted parts though, so the loss is not as big as you would think.

Re: The Global Cost of Corrosion

#138

Post by pcurve »

hristov wrote: post #8

This is an important issue. People keep talking about recycling, but much more important than recycling is just being able to use a thing for longer before you are even thinking about recycling it. Japanese automakers did the world a great favor when in the 80s and 90s they made much longer lasting cars and made longevity and resale value an important consideration in the purchasing decision. They did this mostly by…

"They did this mostly by using better paints and making sure cars and car parts are painted more thoroughly."

Their cars last longer because they put more emphasis on durability and longevity than bleeding edge performance, for parts that matter in extending overall operating life of a vehicle.

Germans may use their dollars differently, designs that require tighter tolerance for higher performance. They may also skimp out on actual durability testing, serviceability of parts, etc. Again, prioritizing performance over other attributes.

Re: The Global Cost of Corrosion

#140

Post by Animats »

function_seven wrote: post #104
asimpletune wrote: post #48

I’ve spent years working on a VW bus restoration, and this is something I’ve thought about so much. Once you’ve had to clean up rust you begin to see it everywhere. It’s like having a disease. Anyways, yeah it would be fantastic if metal just didn’t corrode. That would be one of the greatest gifts to the world.

There are these world-changing inventions we look back on and marvel at. The Haber–Bosch process, the Bessemer process, rubber vulcanization, etc. My dream is one for stainless steel. Come up with either a different alloy or an improved process to make corrosion-proof metal from abundant iron. I can't imagine the leap forward if a chunk of stainless cost nearly the same as mild steel. (And didn't have weird failure m…

There's a lot to be said for stainless steel. But look at the price of chromium.
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