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Alloy Composition


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So I'm trying to find the specific percentages for all the different Allomantic Alloys. The books give us:

Pewter: 91% Tin, 9% Lead

Duralumin: 96% Aluminium, 4% Copper (though the Ars Arcanum says "a mixture of aluminum, copper, manganese, and magnesium" so I'm not sure)

Electrum: 45% Gold, 55% Silver

Has anyone seen any WoB's that narrow down the others? Or am I searching for something that doesn't exist?

Edit:

I'm assuming those percentages are by weight, but can anyone confirm?

Edited by LabRat
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According to wikipedia,

Bendalloy (or wood's metal in the real world) is made from 50% bismuth, 26.7% lead, 13.3% tin and 10% cadmium (by weight)

Nicrosil isnickel alloy containing 14.4% chromium, 1.4% silicon, and 0.1% magnesium. (so 84.1% nickel)

 

Those are pretty specific percentages, so I'll bet they're good enough for allomancy.

 

Brass and Bronze are terms too broad to pin down an exact composition.

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i'd always assumed allomantic alloys were only binary, made of two elements. but i could be wrong

 

In text, the only examples I could find were binary, but as I said above, the Ars Arcanum throws a hefty wrench into that idea.

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According to wikipedia,

Bendalloy (or wood's metal in the real world) is made from 50% bismuth, 26.7% lead, 13.3% tin and 10% cadmium (by weight)

Nicrosil isnickel alloy containing 14.4% chromium, 1.4% silicon, and 0.1% magnesium. (so 84.1% nickel)

 

Those are pretty specific percentages, so I'll bet they're good enough for allomancy.

 

Brass and Bronze are terms too broad to pin down an exact composition.

 

Specific, yes, but not necessarily accurate for Allomancy.

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I seem to vaguely remember that we got a Bendalloy alloy quote at some point but I can't find it so that may just be me imagining things.

 

 

In AoL at one point Wayne says it's difficult to get a hold of enough bismuth, but that's all I can think of as a quote.

 

Specific, yes, but not necessarily accurate for Allomancy.

 

Agreed, but I think it's more likely these percentages, or very close to them, than something completely different.

Burning the alloys from wikipedia might make you slightly nauseated IMO, but they definitely won't kill you, is what I'm trying to say.

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In AoL at one point Wayne says it's difficult to get a hold of enough bismuth, but that's all I can think of as a quote.

 

 

Agreed, but I think it's more likely these percentages, or very close to them, than something completely different.

Burning the alloys from wikipedia might make you slightly nauseated IMO, but they definitely won't kill you, is what I'm trying to say.

It'd be a direct WoB but I think I might just be imagining it.

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Agreed, but I think it's more likely these percentages, or very close to them, than something completely different.

Burning the alloys from wikipedia might make you slightly nauseated IMO, but they definitely won't kill you, is what I'm trying to say.

 

I was hoping to compare the makeup of each Alloy to see if there was any pattern to their composition. If I use "close enough" values, any patterns that emerge could be due to the data's fuzziness.

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I wonder how exact the actual percentages are. Could 90% and 10% actually be something like 90.05 and 9.95?

 

The molecular signature is what determines the power, so you'd think you'd want integer multiples of each atom for a perfect alloy. The %'s are by weight, so just because we want an integer multiple of atoms doesn't give us a nice even number for %'s, but maybe that gives you an idea? (And of course isotopes of an atom will ruin everything in the weight calculation...)

 

For example: Pewter is 91% tin, 9% lead as a rough estimate. 118.71 molecular units for tin, 207.2 molecular units for lead gives us 7.66574:0.434363 atoms. In a more sane ratio, this is 17.6482 tin atoms per every lead atom. If, for example, true Allomantic pewter is 35:2 atoms, our pure Allomantic pewter %'s would actually be 90.90931% tin and 9.0693% lead.

 

But there's no real reason to assume that ratio besides it being pretty close - it's not particularly obvious what the right ratio of atoms would be to me.

 

Perhaps someone with a chemistry degree could chime in on likely crystalline structures for perfect alloys. I'm sure we could get very accurate %'s, better than people on Scadrial, with some figuring.

Edited by Moogle
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Your math is essentially what I'm hoping to do across all the Alloys Moogle, along with comparing a few other things as well.

As for a perfect 35:2 ratio, I wouldn't expect that even if we had exact percentages because there could need to be "extra" atoms around that would maintain the overall structure. Take Graphene for example, a nice, regular, 6-sided form of Carbon that takes 6 atoms to form... except exactly 6 atoms of Carbon aren't stable in a Graphene structure if my understanding is correct. It requires the larger structure to make the individual hexagons stable, and so the total number of Carbons in a Graphene sheet may not even be divisible by 6.

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  • 2 weeks later...

I recently had a thought: what if alloys used up to now are NOT in fact pure enough? Like in fact it's not 91% of some metal, but 91.3674%. I imagine that in the modern-day trilogy scientist will figure out the ideal compositions. It could give a small power boosts to Allomancers, since it would become a better channel to the power source.

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