Galvanized vs stainless concrete anchors

[Sukhoi]

I'm mounting a squat rack to a 50 yr old slab, and plan to use drop-in anchors so I can move the rack if I need to do car work. Are the cheap easily available galvanized ones from Home Depot going to be sufficient to avoid rusting, or should I pay something like 6x more to get stainless ones from McMaster? I don't have a good feeling about how much moisture stays in a slab. As a reference point, the dirt crawlspace under the rest of the house stays very dry now that gutters are installed on the house. Until about 5 years ago it used to flood every winter.

 

[deadlyapp]

I'm mounting a squat rack to a 50 yr old slab, and plan to use drop-in anchors so I can move the rack if I need to do car work. Are the cheap easily available galvanized ones from Home Depot going to be sufficient to avoid rusting, or should I pay something like 6x more to get stainless ones from McMaster? I don't have a good feeling about how much moisture stays in a slab. As a reference point, the dirt crawlspace under the rest of the house stays very dry now that gutters are installed on the house. Until about 5 years ago it used to flood every winter.

I've got standard red head galvanized anchors for my rig which is enclosed but unconditioned space in Houston, TX and haven't had any issues with rust. These are stud style however so they would stick up out of the concrete. Whatever anchor / sleeve you use, as long as you keep the threads lubricated with an anti seize or similar, I wouldn't worry about it too much.

I pulled some tapcons out recently that had been in for a few years and they weren't even in bad shape, despite the fact that they aren't anything but a alloy steel with a coating.

 

[Sukhoi]

Anti-sieze is a good idea. I think I'll just do the galvanized with that.