Stainless vs hot-dipped galvanized: What holds up better to the elements?
>>984210
stainless
Stainless will last forever but is a bitch to clean up as it's not magnetic
Stainless, duh.
Stainless in 95% of applications
>>984217
>stainless steel is not magnetic
What?
>>984217
some stainless steel is magnetic, some is not
>>984259
It's a lot less magnetic than regular steel, at least 316 and 18-8 anyway. A strong neodymium magnet will kind of get it's attention, but even something like that can't be counted on to actually pick up a screw, let alone a dropped box's worth.
>>984210
if its going to be underwater. Galvanized. if its going to be above water, stainless is acceptable. although stainless is more brittle and prone to sheering sooner.
Silicone bronze gives you strength and all weather protection.
Aluminum bronze is good too, but not for hardware.. its a little too soft, but good for boat props.
there are some things that they galvanize with minimum amount legal to be considered "protected" then theres better company's that load it up. those are much much better.. heavy galvanized nail. and after you drive it into the wood, a dab of enamel paint. onto the head. and you're good for freshwater underwater applications for 25+ years.
>>984264
18-8 is more or less 304. Both are fairly magnetic.
316 CAN be magnetic. Especially if it has been worked, bending and whatnot. Sometimes welding does it too (even with 316 filler). It's unlikely you would detect it with a normal ferrite magnet.
>>984324
300 series stainless is pretty shitty for magnetics. I work with the shit, the chips look at magnets like any other piece of material, they ain't interested. And I use old hard drive magnets to pick shit up at the shop.
Guessing from how the item is made to resist weathering, stainless, because hot-dipped is just a layer, while stainless is an actual alloy of steel to prevent weathering
>>984210
Stainless is almost always better. I know of only one exception, which is when it is used in pressure treated wood near salt (e.g. near the coast). Apparently the pressure treatment chemicals + salt produces a reaction that eats away the fasteners in just a couple years.
Guys, I don't think you know the difference between standard zinc-plated and hot dipped fasteners which have a zinc coating that's an order of magnitude thicker.
Hot-dipped fasteners do not rust for decades.
>>984210
Stainless.
Of course, they'll be far more expensive, so you don't use them unless you really, really have to.
>>984210
stainless will last longer under harsh environments. it's a more shitty material, with mild steel being stronger in every aspect other than corrosion resistance.
it's why its so hillarious seeing dickheads with stainless exhausts. they think they will last longer when stainless is known to be shit tier in regards to thermal cycling and vibration under load.
why? did you think manufacturers were just being cheap by not making everything out of 304-316?
>>984210
Stainless-steel:
alloyed for corrosion resistance
galvanized:
coated in zinc for corrosion resistance
stainless will retain its corrosion resistance of scratched or bent, galv will flake off. both have positives and negatives, depends on what the end game is.
>>984451
Flaking zinc does not reduce its corrosion protection beyond there being less zinc.
The zinc is a sacrificial anode - if it is in contact with the steel, it will prevent the steel from rusting until it is consumed itself. If there's a shit ton of it, like on a hot-dipped nail, this will basically take a lifetime. .
>>984454
once it starts to flake, it will keep flaking, and you will lose corrosion protection.
ive worked at a fab shop for 4 years that makes cattle feed mixers, one of our small models has a galved chassis. every so often we get one come back with rust damage, usually a spot 4"x4" inside the chassis (where water/mud settles) gets rust damage, hardly severe, but still there and enough that it will get worse with time.
>>984210
galv, if one of the elements is 'being hit with a hammer'
>>984454
The zinc only really corrosion proofs what it is in touch with. Metals have a grain structure that if there are the right conditions for corrosion then corrosion will occur. I have had galved chassis rust through on trailers in the same place over every trailer due to localised friction removing the galv.
>>984437
Then explain guns, especially those expected to be used in hard conditions, are made of stainless steel, usually coated as well.
>>984610
The majority of guns aren't made out of stainless steel. Only things like revolvers, fancy pistols, "marine" shotguns and competition guns use stainless steel.
Some nice forged steel with a good finish will outdo stainless steel any day. Also chrome lined barrels > stainless steel
