• 🇰 🌀 🇱 🇦 🇳 🇦 🇰 🇮 🏆
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    1 year ago

    I saw something the other day where a dude talking about a car they were fixing up said they used aluminum for the finish because it looked better than steel and I’m just like “that sounds like how I’ve heard girls prefer eggshell to off-white. They’re the same color!”

      • @VonCesaw@lemmy.world
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        441 year ago

        Guy that named it called it Aluminum

        Weirdo types that decided they were in charge of naming things decided to name it Aluminium so it “matched” the likes of other metals like titanium, iridium, etc

        • @hessenjunge@discuss.tchncs.de
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          121 year ago

          Guy that named it called it Aluminum, Alumium, and Aluminium. Aluminium stuck, even in the US.

          Then some weirdo types decided they were in charge of naming things in the US decided it needs to be Aluminum. It took them about 50-90 years to succeed.

        • Tlaloc_Temporal
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          51 year ago

          No, the guy who discovered it called it Alumium, after Alum. Both Aluminum and Aluminium were later constructions by journals on opposite sides of the pond.

        • @Viking_Hippie@lemmy.world
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          61 year ago

          Guy that named it called it Aluminum

          Let me guess: you pronounce GIF as Jif just because the creator is a peanut butter obsessed weirdo who couldn’t pronounce “graphics”?

          • @PoopingCough@lemmy.world
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            51 year ago

            couldn’t pronounce “graphics”

            That’s not how acronym pronunciation works though. We don’t pronounce them based on the words they stand for, otherwise we would pronounce NASA, SCUBA, LASER, etc. differently. Both pronunciations have valid arguments so why can’t we just accept both and stop being weird about it.

            • dditty
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              1 year ago

              Because I arbitrarily decided it’s gif 13 years ago and anyone who says it the other way is wrong 😡😡😡

  • @Kroxx@lemm.ee
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    741 year ago

    Team aluminum all the way. A higher up where I work is obsessed with stainless steel, he gets these monstrous heavy duty tables made out of SS that hold objects 1/3 of their weight. Makes lab rearranging a nightmare lol.

    • Sippy Cup
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      241 year ago

      Aluminum is where it’s at, and where it is, is everywhere.

      Your cans? Aluminum. Your car? Mostly aluminum. Old wiring, you better believe that’s aluminum. Your fucking phone screen is aluminum, sand paper is aluminum, half the birth stones are all aluminum let’s fucking goooo baybee

      • @nilloc@discuss.tchncs.de
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        1 year ago

        Most cars are still steel. Source I work on cars in New England. So much rust, even on the ones with aluminum bodies, at least wherever it can touch a dissimilar metal and becomes a battery.

        And crucially the important parts that keep it from exploding (cylinder liners) and save you in a crash (crumple and bumper cores) are almost all steel. Because it deforms better with simpler engineering.

        See also iron brakes in most cars hardened steel bearings everywhere.

        • Sippy Cup
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          11 year ago

          I was referring to the engine block and pistons being aluminum. I assume chassis and many of the critical spinning bits are still steel or iron.

          It’s also mostly a shit post. I’m a machinist and I am surrounded by aluminum in funny forms.

          • @nilloc@discuss.tchncs.de
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            11 year ago

            Yeah I’m mostly just shitting on it for fun too. But the pistons don’t work very long without steel rings, wrist pins and big end bolts.

            The problem is we have to bring copper, brass and other fancy metals in them though, because the all spin on oil cushion bearings. Unless we’re talking Babbitt bushings from the early 1900s.

  • Codex
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    261 year ago

    Always been more of an iridium man myself

    • Adkml [he/him]
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      101 year ago

      But seriously making the body pannels out of stainless steel and the frame out of aluminum would be a hilarious joke among 2nd year engineering students about what happens when you let the sales people make the specs.

  • @moshankey@lemmy.world
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    71 year ago

    As a former cyclist, steel is real. I’ve seen aluminum bikes fail (as in, break at the top and down tube)during a ride. Screw your aluminum!

    • @Damage@feddit.it
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      51 year ago

      not to defend Alluminium (bleh), but that’s likely a production error, bad hydroforming, bad welds… at least it’s not CF!

      • @moshankey@lemmy.world
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        1 year ago

        It was the early 90’s and Raleigh had a line called Technium. The tubes were bonded to the lugs. Not really welded. More pinned and “glued” I guess. The frame broke at either the top or down tube and there went the fork, and my buddy’s face. Screw aluminum. Steel has memory. I found that out the hard way. I’m far from a metallurgist. This is the extent of my elementary teacher brain. And a broken cf seat post is scary.

      • @mnemonicmonkeys@sh.itjust.works
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        1 year ago

        While I agree, I do have to clarify that there is a fatigue limit, it’s mainly that the limit for steel increases so fast that few people are willing to put in the testing for billions of cycles to model ultra-high cycle fatigue

        • @Eheran@lemmy.world
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          1 year ago

          Where is that limit supposed to be? The line does not flatten, unlike that of steel. Which is a flat line from 1 million to 1 billion cycles. During the same number of cycles, aluminium drops from 25 to 14 ski, a loss of 44 %. The article specifically mentions:

          Some metals such as ferrous alloys and titanium alloys have a distinct limit, whereas others such as aluminium and copper do not and will eventually fail even from small stress amplitudes.

          • @mnemonicmonkeys@sh.itjust.works
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            1 year ago

            Head’s up, referring to it as a “limit” like your article did is incorrect. In engineering you have what’s called an S-N diagram, which plots out the average time to failure based on average cyclic stress. Basically, a lower avaerage stress results in a higher average life. Also, this plot uses a logarithmic scale for both axis, because then all of the plots are straight lines.

            For steel, the S-N diagram has what’s called the “knee”, which is where you have two distinct lines in the S-N curve: one horizontal and one at an angle, with the two intersecting at 1 million cycles. Referring to the knee as a limit (like in the article) is wrong because it’s not a limit; it’s the threshold where if you design a part to last beyond that (aka less cyclic stress than would get 1 million cycles) then it practically lasts forever.

            In reality, the part won’t actually last forever, since the S-N curve beyond 1 million cycles isn’t perfectly horizontal. It’s just that reducing your cyclic stress quickly increases your predicted life into billions or even trillions of cycles. This is known as ultra-high cycle fatigue, and it’s generally impractical to do all the testing required to model because each sample would take months to test on the low end. Plus, there’s little demand for such models in the industry, though there are a handful of PhD students and post-docs working on it

            • @Eheran@lemmy.world
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              11 year ago

              Does that change anything regarding the discussion? If the limit is quickly so high that it is beyond reasonable time spans? In the comparison at hand, aluminium has no fatigue limit, steel does. They still use aluminium for aircraft etc. due to the superior weight savings.

              • @mnemonicmonkeys@sh.itjust.works
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                11 year ago

                Does that change anything regarding the discussion?

                Yes, because the term “fatigue limit” makes lay people think the exact opposite of what is intended.

    • @Maalus@lemmy.world
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      51 year ago

      Aluminium doesn’t get stronger on the welds like steel does, it gets weaker. So if you screw them up, you end up with a two part bike

    • ...m...
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      61 year ago

      …my steel frame split at the welds fourty-five years ago; my bonded aluminum frame has ridden out building fires with nary an issue…

    • @BastingChemina@slrpnk.net
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      21 year ago

      I love my steel bike, it’s great on the road, on gravel or for a quick grocery shop.

      I’m not gonna win any competition with it but it is honestly such a fun bike.

      And with care it should last forever.

    • Pirky
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      101 year ago

      Titanium is awesome, though. Has similar corrosion properties to aluminum (in that it only oxidizes on the surface), is similar in strength to iron/steel, but is only about 60% of the weight iron. So it’s lighter.
      Plus if you mix in molybdenum and I think some nickel, you can have yourself a very long lasting spring that won’t sag like steel springs after several years.
      Main downside is it’s so expensive compared to iron :(