Hey there, it’s Mia from the epoxy fridge magnet line—before I dive into the question I get at least a dozen times a week from boutique café owners, craft fair vendors, and even DIY home renovators, let me set the scene: last month, I helped a regular customer named Jake, who runs a tiny vintage record shop in Portland, order 200 custom band-themed epoxy magnets for his checkout counter. A week later, he slid into our DMs, totally stumped. “Mia, these magnets are stickin’ to my vintage cash register, but half fell off my metal wall organizer. What gives?” That’s exactly the kind of real-world, messy, not-just-textbook stuff I deal with, and it’s what made me want to break down this question once and for all: Can I use epoxy fridge magnets on other metal surfaces? Epoxy Fridge Magnet
First, let’s cut through the jargon that confuses most people. When someone says “epoxy fridge magnet,” they’re not talking about a single material—those little cute discs or custom shapes we make start with three core parts: the epoxy resin topcoat (the shiny, scratch-proof layer you see with printed art inside), a flexible vinyl or paper insert (where the design goes—band logos, family photos, promotional art, holiday themes), and the magnet core itself. That core is non-negotiable here, and it’s usually one of two things: ferrite (black, ceramic-like, common in cheap fridge magnets) or neodymium (rare-earth, much stronger, our go-to for custom orders that need extra hold).
Now, here’s the part most magnet suppliers skip to sell more product: fridge magnets work only on ferromagnetic metal surfaces. Ferromagnetic means the metal has iron, nickel, or cobalt in it—stuff that gets pulled toward a standard fridge magnet (which is usually ferrous steel). That means your kitchen fridge works because it’s made of ferrous steel. But not all metal surfaces are ferromagnetic, and that’s where Jake’s problem came in. His vintage cash register is solid ferrous steel, so it held the magnets fine. His metal wall organizer, though? Turned out it was made of aluminum with a stainless steel “stainless” finish—wait, not all stainless steel is the same. A lot of “stainless” steel is austenitic, which means it has high chromium and nickel, almost no iron. That means it’s not ferromagnetic. So the ferrite core in his magnets couldn’t grip it, and they fell. That’s not a flaw in our epoxy magnets—that’s a reality of magnet science, and it’s something anyone using these should understand.
Next question: Even if a surface is ferromagnetic, can epoxy fridge magnets work there? Let’s start with the obvious: if the metal is your fridge, sure, that’s what they’re for. But what about other surfaces? Let’s break down common use cases, starting with how well our epoxy magnets perform on different ferrous and non-ferrous metals, based on the hundreds of test orders we’ve sent out over the last four years.
First, ferrous metals that work great: standard fridge steel (obviously), most cast iron surfaces, ferrous stainless steel (the kind used in industrial sinks or some grill grates—if it sticks to a regular fridge magnet, it’ll stick to ours), and ferrous steel shelves in pantries or workshops. For these, hold is almost identical to a regular fridge, as long as the magnet’s core is strong enough. Our standard line uses medium-strength ferrite, which holds 1–2 lbs per magnet—more than enough for a grocery list or a custom logo. If you need to hang heavier stuff, like small photo prints or promotional flyers, we upgrade to neodymium cores, which hold 5–10 lbs each, and those work even on ferrous steel that’s been around a while (like that old workbench you have in the garage).
Now, the trickier ones: non-ferrous metals. Aluminum: most aluminum is non-ferromagnetic, so our standard epoxy magnets won’t stick. We did test batches for a customer who wanted to put magnets on aluminum patio furniture—at first, no luck. Then we tried adding a tiny metal shim (a thin piece of ferrous steel) to the back of the aluminum surface, and suddenly the magnets held. That’s a hack we’ve shared with every customer who’s asked about aluminum surfaces since. Then there’s copper, brass, and galvanized steel. Galvanized steel has a thin zinc coating, which makes it… wait, here’s a fun fact: galvanized steel is ferrous, because it’s iron with a zinc coating, so it is ferromagnetic. But wait—test that before you buy! We’ve had customers say “my galvanized fence works” and others say it doesn’t, because some manufacturers add non-ferromagnetic additives to galvanized coatings to prevent rust. If your fridge magnet sticks to a piece of galvanized metal, ours will too. Copper and brass are non-ferromagnetic, so same as aluminum: no hold unless you add a ferrous shim or use a stronger (but still not super strong) hold.
Then there are surfaces where people make mistakes even when they have ferromagnetic metal. Let’s say you have a stainless steel fridge—wait, that’s ferrous stainless, right? Most of the time, yes, but newer “fingerprint-proof” stainless steel uses a non-ferromagnetic coating, so it might not stick. That’s exactly what happened to a customer in Chicago last year—she bought our custom baby photo magnets for her new fridge, and they slid right off. We sent her a free set of our neodymium-core magnets, and those worked, because neodymium is strong enough to grip through thin, non-ferromagnetic coatings sometimes, though not always. Another common mistake: metal surfaces with a wax or oil coating. If you put a magnet on a metal tool chest that’s been oiled for protection, the oil creates a barrier between the magnet and the metal, so the hold is weaker. Wipe down any surface with a mild soap and water first, let it dry completely, and your magnets will grip way better.
Now, let’s talk about something that’s uniquely about epoxy fridge magnets, not just generic magnets: the epoxy topcoat. Does that affect how well they work on other metal surfaces? Short answer: not usually. The epoxy is a thin, hard, non-magnetic layer, so it doesn’t interfere with the magnet’s ability to pull toward the metal. The only time it’s a problem is if the surface has really small bumps or rough texture, because the epoxy can’t compress to make a full seal, so there’s air gaps between the magnet and the metal. Wait—we solved that for rough surfaces! For customers who want to use our epoxy magnets on rough ferrous surfaces like unfinished cast iron or old metal barn walls, we recommend a thin layer of double-sided magnetic tape (wait, no, regular double-sided tape won’t work—we have a special, ultra-thin ferrous-backed adhesive strip we offer as an add-on) that fills in the small gaps, so the magnet can get as close as possible to the metal, boosting hold by about 30%. That’s a trick we developed after working with a farmer customer who wanted to hang our custom logo magnets on his barn doors, which are rough and have a lot of texture. Before he used the tape, the magnets fell off in the wind; after, they’ve stayed up for 18 months in rain, snow, and Texas sun.
I know what you’re thinking: “But Mia, I want to hang magnets on my kitchen backsplash, which is metal tile—what about that?” Metal backsplashes are usually ferrous steel, so they work great, but if the tiles are coated in a glossy epoxy or acrylic, that’s a barrier. We did a test last quarter: a standard ferrous steel tile with no coating held our medium ferrite magnet for a week with no movement. The same tile with a 1mm acrylic coating? The magnet slid after three days, because the coating is a non-magnetic barrier. Again, neodymium cores work better here—we tested a neodymium magnet on that coated tile, and it stayed put for two weeks before we removed it. That’s a big win for homeowners who want to personalize their backsplash without drilling holes.
Now, let’s get real about limitations, because I don’t want to oversell our epoxy magnets. If you have a surface that’s not ferromagnetic at all, like aluminum siding, a copper pot, or a brass vase, there’s no way around it: our standard epoxy magnets won’t stick—even the neodymium ones, while stronger, still rely on the metal’s magnetic properties to grip. The only way to make them stick to non-ferrous metal is to use a ferrous insert or shim between the magnet and the surface. We sell those shims as a cheap add-on, usually 5 cents each, and they’re thin enough that you barely notice them under the magnet. We also do custom magnets pre-attached to these shims for bulk orders—perfect for café owners who want to put magnets on aluminum menu boards or boutique owners who want to display magnets on non-ferrous metal shelves.
Another common question: can I use epoxy fridge magnets on outdoor metal surfaces? Yes, but only if the metal is ferrous and you take a couple of extra steps. The epoxy topcoat is UV-resistant (we use a 100% food-grade, scratch-proof epoxy that’s designed to hold up to sunlight, rain, and temperature changes), so the design won’t fade. But the magnet core—ferrite can rust if it gets exposed to moisture, so for outdoor use, we always recommend switching to a neodymium core with a nickel-copper-nickel plating, which is rust-proof. We had a customer in Seattle put our custom dog breed magnets on her metal garden gate two years ago, and they’ve been through constant rain, cold, and sun, and they still look like new. Just make sure you wipe down the gate once a month to remove dirt and debris, which can create gaps between the magnet and the metal.
Wait, let’s circle back to Jake’s case—his metal wall organizer was aluminum, so we suggested two options: either add our ferrous shims to the back of the organizer, so the magnets stick, or switch to adhesive epoxy magnets, wait no—our magnets are magnetic, but we also offer a dual-back option: one side is the magnet, the other is adhesive, so you can stick it to any surface, metal or not. But Jake wanted it to be removable, so we sent him a set of neodymium-core magnets with our thinnest shims, and he DM’d us a week later saying they worked perfectly, no more falling. That’s the kind of problem-solving we do every day, not just “sell magnets and run.”
I think the biggest takeaway here is that this isn’t a yes/no question—it’s a “depends on two things: the metal’s magnetic properties and the magnet’s core strength” answer. If you follow a few simple rules, you can use epoxy fridge magnets on all kinds of surfaces, not just your kitchen fridge. Let’s recap the quick cheat sheet I’ve taped to my desk at work:
- First, test the surface with a regular fridge magnet: if it sticks, our standard epoxy magnets will work.
- If it doesn’t stick, it’s probably non-ferrous (aluminum, copper, brass)—add a thin ferrous shim or upgrade to neodymium-core magnets, which are stronger and can grip through thin non-ferrous coatings.
- For rough or coated surfaces, wipe down first, use our special ferrous-backed adhesive strips if needed, and avoid oil or wax barriers.
- For outdoor use, go with rust-proof neodymium cores—our epoxy topcoat is built to handle the elements.
Now, I know a lot of blogs will tell you “our magnets work on any metal” to sell more, but that’s just not true, and as someone who’s been in this business for four years, I value honesty over a quick sale. We’ve had customers come to us after buying cheap magnets from big box stores that fell off their metal shelves, and our custom epoxy magnets have solved that because we build them to last, not just look cute.
Whether you’re a shop owner wanting to display promotional magnets on your counter, a homeowner wanting to decorate your metal backsplash or workbench, or a craft fair vendor looking for a way to hang your product displays, epoxy fridge magnets can work on more surfaces than just your fridge—you just have to know the right way to pair them with the surface.
If you’re ready to place an order, or you have a specific surface question you’re not sure about, just reach out to our team to discuss your project needs. We’re happy to help you figure out the right magnet core, size, and finish for your metal surface, no jargon, no upselling, just real advice from people who use these magnets every day.
Epoxy Resin Keychains References:
- ASTM International. Standard Test Method for Measuring Magnetic Flux Density of Permanent Magnets. ASTM B883-21, 2021.
- Metal Supermarkets. Ferromagnetic vs. Non-Ferromagnetic Metals: A Practical Guide for Industrial Applications. 2022 Industry Resource.
- Epoxy Resin Manufacturers Association. Performance Standards for Protective Epoxy Coatings for Domestic and Commercial Applications. 2023 Technical Bulletin.
- Rare Earth Magnet Association. Guidelines for Selecting Permanent Magnet Cores for High-Temperature and Outdoor Applications. 2020 Product Specification.
Wenzhou Qumange Craft Co., Ltd.
With abundant experience, we are one of the most professional epoxy fridge magnet manufacturers in China. Welcome to wholesale bulk customized epoxy fridge magnet at competitive price from our factory. If you have any enquiry about pricelist and free sample, please feel free to email us.
Address: Room 802, Building A1, Yuehu Light Industrial Park, Taishun County, Wenzhou City, Zhejiang Province, China
E-mail: 13806616181@139.com
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