Alright, let’s talk about this 3105 aluminum stuff. I ain’t no scientist, mind you, but I’ve heard things and seen things, ya know? Folks use it for all sorts of stuff, so I reckon it must be pretty good.
Now, from what I gather, this 3105 aluminum, it’s mostly just plain ol’ aluminum, like 98% or somethin’. But they add a little bit of somethin’ else to it, to make it a bit stronger, ya see? They say it’s stronger than that 1100 and 3003 stuff. Not sure what that is, but this 3105, it’s the one folks seem to like.


What’s so special about 3105 aluminum? Well, for starters, it don’t rust easy. They call it “corrosion resistant,” fancy words for “don’t rust.” That’s a good thing, right? Nobody wants their stuff fallin’ apart after a bit of rain.
And get this, you can bend it and shape it pretty good too. They call that “formability.” Means you can make all sorts of things out of it. Pots, pans, roofs, whatever you need. It’s like playdough for grown-ups, but tougher, of course.
- Stronger than some other aluminum
- Doesn’t rust easy (corrosion resistant)
- Easy to bend and shape (good formability)
- Easy to weld (good weldability)
I heard some folks talkin’ about weldin’ it too. Seems like you can stick it together real good, make bigger pieces, ya know? That’s handy if you’re buildin’ somethin’ big, like a shed or somethin’. They call it “weldability”. Sounds about right.
Now, don’t go thinkin’ you can heat this stuff up and make it super strong like steel. It don’t work that way. This 3105 aluminum, it ain’t “heat treatable.” What you see is what you get. But that’s alright, it’s strong enough for most things.
They say this 3105 is part of the “3000 series” aluminum alloys. Sounds fancy, but all it means is they put some manganese in it. Manganese, I ain’t even sure what that is, but it’s in there, and it makes the aluminum better, I guess.
What do they use 3105 aluminum for? Well, like I said, all sorts of things. I’ve seen it used for roofs, gutters, siding on houses. Them fellas that work with sheet metal, they use it a lot. It’s good for anything that needs to be a little bit strong, but don’t need to be super tough like a bulldozer or somethin’. It’s just that kind of aluminum, you know? Good enough for most things around the house and farm.


I heard someone comparing it to 5052 aluminum. Said that 5052 is stronger and easier to machine. Well, that may be true, but this here 3105 seems plenty good enough for most folks I know. And if it ain’t broke, don’t fix it, I always say.
So, there you have it. That’s about all I know about this 3105 aluminum. It’s good stuff, strong, doesn’t rust, easy to work with. What more could you want? If you need somethin’ made out of metal, this 3105 aluminum is a good choice, as good as any I reckon. It ain’t the fanciest thing in the world, but it gets the job done, and that’s what matters.
And remember, I ain’t no expert, just tellin’ it like I see it. But I’ve seen enough to know that this 3105 aluminum, it’s a good all-around metal. You can trust it to hold up, rain or shine. That’s the truth, plain and simple.
In short, 3105 aluminum: Mostly aluminum, a little bit stronger, doesn’t rust, bends easy, welds good, and ain’t heat treatable. Good for lots of things, like roofs and gutters and such. It’s good stuff and will get the job done.
Tags: [3105 Aluminum, Aluminum Alloy, Sheet Metal, Corrosion Resistant, Formability, Weldability, 3000 Series Aluminum, Manganese Alloy]