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New alloy request: Aluminum bronze


AngryRob

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We don't have aluminum, though. Just bauxite, which can't be smelted at our tech level.

I'm not sure it'd be worth it to create assets for native aluminum, aluminum metal, and aluminum bronze just to make something that basically looks like brass anyway.

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Yeah, there's a reason the guy is throwing pure aluminium into his crucible, and not bauxite.

Because aluminium is fiendishly difficult to refine from ore. Far more difficult than iron, even. It takes a humongous amount of energy in combination with chemical reduction; in the modern day we make it by sticking massive electrodes into aluminium salts (which have to be specially made in prior processing steps) and blasting them with raw electricity until they melt, because no fuel exists that could do the job. Early-on after its discovery in the 1800's, aluminium fetched as much as twice the price of gold, despite being impure, because the processes available back then couldn't purify it properly.

Given that aluminium bronze is not even that good as a tool metal - the video shows that it dulls within mere minutes of working hardwood - it would likely sit somewhere between copper and tin bronze. It makes no sense for the progression to have a metal that's harder to make than iron be required for a step before bronze. And it might even be disqualified as a tool metal entirely, and only available for making other metal objects, in the same way as brass currently is.

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Aluminum would be an obvious component for the level 2 glider, which doesn't exist but if they DID. Or mirrors. Anyway, yeah, Al metal is much more difficult to make than steel, but once you HAVE it at all, it's really easy to work, and it doesn't corrode. Maybe find bits or chisel-able items in deep ruins?

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17 hours ago, Maelstrom said:

Seems like the humans (pre and definitely post apocalypse) were not technologically advanced enough to produce aluminum.

You mean they had multiple apocalypses?

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On 3/30/2024 at 7:39 PM, Michael Gates said:

and it doesn't corrode.

Depends on what you mean by that. It oxidizes in seconds, forming a very thin protective coating of Al2O3. But unlike the various iron oxides and copper oxides, it does not spall or pit the metal, so it is stabilized at that.

[EDIT]

The metal is passivated. That's the word I was trying to come up with.

[/EDIT]

Edited by Thorfinn
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5 hours ago, Dra6o0n said:

The wiki doesn't have much on Nickel yet. The Alloy was added, but nothing on Nickel itself.

There's nothing useful to make out of nickel, just the ingots, or bits (by chiseling an ingot), or cupronickel which you COULD make with nickel bits but raw pentlandite works the same so there's no reason to make nickel ingots in the first place :)

And this is why the wiki doesn't say much.

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The use of nickel is generally a niche, as they were mainly used to make coins and wires. When it comes to medieval era usage, it'd end up being in the same use as any other metal for mail armor and such. It is a metal harder than iron in some sense. Medieval era may have used them in some form for knives and plating though because of how silvery it looks.

So in the end it's just a cosmetically better looking iron? And Steel is stronger.

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