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High Corrosion Resistance Magnets
(168 Products)High corrosion magnets are designed to operate in the harshest of environments where magnets are most vulnerable to rusting. Our range of corrosion resistant magnets are designed to maintain a superior performance outdoors where other magnets are likely to fail.
![Samarium Cobalt Disc Magnet - 1/4 in. dia x 1/8 in. thick - 1.54lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/C05OPxjihPGmeU49todUJm78S3N9h8XKawxoTSzO.jpg)
![Samarium Cobalt High Tempreature Disc Magnet - 1/4 in. dia x 1/4 in. thick - 1.96lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/5jgQ5grJAk04rd0SlxvdawN5Iq3odqw34JBD0Npa.jpg)
![Ceramic Countersunk Magnet - 13/16 in. dia x 3/8 in. thick x 3/16 in. - 2.65lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/eAIzNzyCLD2l2QWb0036WtCJuib3dUSvJWx548Bj.jpg)
![Ceramic Stainless Steel Channel Magnet - 1 in. x 29/32 in. x 1/4 in. thick x 1/8 in. hole - 13.45lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/yrTOgPjQyfzgFvZMA7P3fotjLe8UhzFvnuVQRjgQ.jpg)
![N42 Neodymium Rubber Coated Disc Magnet - 19/32 in. dia x 1/8 in. thick - 3.96lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/GCFcYfhwP2RPxDT3wjoUlsuhUtUUX8upHNhI3PMb.jpg)
![Y30BH Ceramic Ring Magnet - 1-1/4 in. O.D. x 11/16 in. I.D. x 3/16 in. thick - 2.21lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Jw1LTysWWmTnqXvvzwc5N9tlWk1lAFpDr7Huro2d.jpg)
![Red Alnico Horseshoe Magnet - 2-9/16 in. x 1-9/16 in. x 2-3/16 in. - 81.59lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/gJdpyoCQWd83Wz1MosP7GUfuFZfFxGd4Z9kG7mgC.jpg)
![Red Alnico Horseshoe Magnet - 2-1/8 in. x 3-1/4 in. x 2-9/16 in. - 103.64lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/1HjfXhEG4bIjR3K1jCB5TveNNw72U4FwDLYLItCB.jpg)
![MagFlex® Double-Sided Flexible Black Magnetic Sheet - 24-3/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/rl8GOFMLcKCMinIuCbfScambN1HBe7A5DilzH06U.jpg)
![MagFlex® A4 Flexible Magnetic Sheet - Colored](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/HnorS0xVYx3paFN3tju9ZPIVPos58m07kJtxMk3L.jpg)
![MagFlex® A4 Flexible 3M Self-Adhesive Magnetic Sheet](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/F1h7qu01EIIPtYJfbEJL38NpCpkEvRI89dbBAxMl.jpg)
![Alnico 5 Deep Pot Magnet c/w M6 threaded hole - 1-3/8 in. dia x 1-3/16 in. thick - 30.87lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/mYhyC3ElfIpNM4yY37PdJUHOoaB6QOwbTwkp6HLi.png)
![MagFlex® Xtra-Lite Flexible Black Magnetic Sheet - 24-3/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/mzGxFG9BH7Pgs9W3DN4gKCy5IcC59qenclQJHn84.jpg)
![MagFlex® Ultra Flexible Black Magnetic Sheet - 24-3/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/KzvA8u7GnbUy1CLbaX7QyRYxjEVBMRVPTNHBvLI8.jpg)
![MagFlex® Lite Flexible Magnetic Gridding Tape - 1 in. Wide - Black](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/zmnRPorXQiujSFKZ5Q6yrwttnLQHOjdr9g3FPUv7.jpg)
![Samarium Cobalt Ring Magnet - 5/32 in. dia x 1/16 in. thick - 0.71lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/k9aeUDoBsZzZCyEfA0qPPJ5NNXPIIMdY7U5u2xC2.jpg)
![Samarium Cobalt Disc Magnet - 1-3/16 in. dia x 3/8 in. thick - 30.64lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/pQHA0rKBnQqyYMxSs8XyVsegEuJbo602H0RMiKd8.jpg)
![Custom Printed MagFlex® A3 Flexible Gloss White Magnetic Sheet](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/naZTPfwcDOku6LoXnp0gK9yvWRMyqHBBGk60aWDK.jpg)
![Custom Printed MagFlex® A4 Flexible Magnetic Sheet - Colored](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/5TbviVSoDc4JvZWiWJ4wgVqxqtNpgFzVhhyKmeAY.jpg)
![Custom Printed MagFlex® Lite Dry Erase Flexible Magnetic Label - 3-7/8 in. Long x 2-1/4 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Th1M0OUYKL7BM58w7kDS8OBO0B3XRwOrKHR2ogvO.jpg)
![Custom Printed MagFlex® Lite Dry Erase Flexible Magnetic Label - 4-9/16 in. Long x 1-9/16 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/WOKHTOAuKs7ewBoZaFy7jbFbV0pZh7yVE9rfD016.jpg)
![Custom Printed MagFlex® Lite Dry Erase Flexible Magnetic Labels - 3-3/8 in. Long x 2 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/CtwS8QVHXeLJvNnHU6aVAobKZpn64BnogjBV9ajZ.jpg)
![Custom Printed MagFlex® Xtra-Lite A3 Flexible Magnetic Sheet - Inkjet Printable](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/naZTPfwcDOku6LoXnp0gK9yvWRMyqHBBGk60aWDK.jpg)
![Pocket Size Red Alnico Horseshoe Magnet - 1 in. x 1-1/16 in. x 5/16 in. - 3.31lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/hRY9FmmnMGqEGMtuzOLTuIDqpr3KUgWSZsnVtqaT.png)
High Corrosion Resistance Magnets
Corrosion is the most common cause for a magnet failing. If you are using magnets outdoors, or in an environment in which they are likely to come into regular contact with moisture then you need a material that won’t rust. Here, you will find a range of ceramic magnets, samarium cobalt magnets, alnico magnets and flexible magnets that all have excellent resistance to corrosion without any further coating or protection. Magnets that are susceptible to corrosion are often plated to give some protection, however this is often not enough to withstand continued use in moist environments, the magnets may look fine on the outside but could be rusting from the inside out.
Samarium cobalt magnets are made of an alloy with very little iron content, which gives them their superior resistance, while ceramic magnets are made from iron-oxide which is commonly known as rust and therefore won’t corrode further once manufactured.