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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 Countersunk Disc Magnet - 3/8 in. dia x 3/16 in. thick x 1/8 in. Hole - 4.41lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/yiH3dn1o8qI7JKFInSJ6ypeumrGxKEcnFB188RIa.jpg)
![MagFlex® Lite Flexible Gloss Dry Erase Magnetic Label Strip - 1-7/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/VoFkhvDDXnZqwu8cj5cyyGhuwixcXLeexdlk2NBh.jpg)
![MagFlex® Flexible 3M Self-Adhesive Magnetic Sheet - 11-9/16 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/MOl2qzTLVYN8mhvOrFAlGKgxS3aCJ0NGvZsdJ9g1.jpg)
![MagFlex® Flexible 3M Self-Adhesive Magnetic Sheet - 24-3/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/AlJ1N91zHkGkSlnjzQNvUB6xKtXX7rGbDQFg7mi1.jpg)
![MagFlex® 2 in. Wide Flexible Magnetic Tape - Premium Self-Adhesive](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/9b2Ee7WjegfHk1wN9Poauf4kDiY66Q3W0WWpCF0p.jpg)
![Alnico Rectangular Bar Magnets - 3/8 in. x 3/16 in. x 13/16 in. - 0.22lbs Pull (Pack of 2)](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/RhoO3yTgBZ8xw09vuGWDzqLcYU59xvzsyLLrs06b.jpg)
![Alnico Rectangular Bar Magnets - 1/2 in. x 3/16 in. x 1-9/16 in. - 1.32lbs Pull (Pack of 2)](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/2AvOMPhUCvJ74tDPCthDEnD0Z48y8ms0alHV1iFo.jpg)
![Alnico Rectangular Bar Magnets - 19/32 in. x 3/8 in. x 1-7/8 in. - 3.75lbs Pull (Pack of 2)](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/3Cm9WeBceeTuObEMZDV5FVUjImrnVM2cX35vxtsB.jpg)
![Alnico Rectangular Bar Magnets - 19/32 in. x 3/8 in. x 3 in. - 4.85lbs Pull (Pack of 2)](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/WoAEB2UE25XI113RIZJrjZVvYGAjTLSnD8pSq2cm.jpg)
![N42 Neodymium Rubber Coated Square Magnet - 1-7/8 in. x 1-7/8 in. x 1 in. thick with 5/16 in. dia Countersunk Hole - 185.22lbs Pull (North/South)](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/hm5Csr1CFO1lBt5JaHbin8Et0EpsqcbBQQs3OCSs.jpg)
![Stainless Steel Magnetic Bowl](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/t9vn7O6wlVcnNH181mPNvIkTbddCEjVDJxLDqybm.jpg)
![Stainless Steel Magnetic Tray](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/LXqcPVUoYHTu9EfT4zG2WR8XbqAHOHjveNFHdoqD.jpg)
![N42 Neodymium PTFE Coated Countersunk Disc Magnet - 3/8 in. dia x 1/16 in. thick x 1/8 in. hole - 2.64lbs Pull (North)](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/VUC0g3Wo7w0okZpFTDIbsFBbw0IegntAwgg0UnaT.jpg)
![MagFlex® Flexible Black Magnetic Sheet - 24-3/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/PHyR7TOhHGCp1oh0pQKUacMPMAv0k9PDvlhnmkSP.jpg)
![MagFlex® Ultra Flexible Black Magnetic Sheet - 24-3/8 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/uDiwf7zh7HMkO2B4iAlKwictpkUQsuIpEaoCZ774.jpg)
![MagFlex® Xtra-Lite Wide Flexible Magnetic Sheet - 24-3/8 in. - Matt White](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/c8fm9jG7Ph2oGaEoW2nANjouutlATNgm4eMcs4y2.jpg)
![MagFlex® Lite Flexible Dry Erase Magnetic Label Strip - 1 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/aJcU8oiGCDJ83AJCICBC50uc7od7EL4AhW5hHB9O.jpg)
![Y30BH Ceramic Magnet - 6 in. x 1 in. x 1 in. thick - 33.08lbs pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/HtqYrORdc5VL826Ch4b0VSte5NSGeD9lIJoIWg7z.jpg)
![Halloween Fridge Magnets Pack - Create Your Own!](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/sejojqAQJjozdYLyJkfww3O2Sb64y851t8L3fSaA.jpg)
![Y30BH Ceramic Magnet - 13/16 in. x 3/8 in. thick - 2.65lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/DzrQqulJAxeNVYu5qprB7UtF6tJ8GrmiMMAG6BTx.jpg)
![Y30BH Ceramic Rectangular Magnet - 1 in. x 3/8 in. x 1/8 in. thick - 0.97lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/6Zu12tLeeXM5F60d68vemFgEREmbFxmGth9JRxyZ.jpg)
![MagFlex® Lite Flexible Dry Erase Magnetic Label - 3-7/8 in. Long x 2-1/4 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Gua4gT6oJumcGwEaFDMiAMd9bPegyAo9GtfiG1oF.jpg)
![Samarium Cobalt Disc Magnet - 3/8 in. dia x 1/32 in. thick - 0.88lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/I4yjnRr5KPq4a7N1TqShYzNrl2OLwrvYf6DyGd0t.jpg)
![N42 Neodymium Stainless Steel Pot Magnet with M8 Internal Thread - 1-1/4 in. dia x 15/32 in. Thick - 85.99lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/PbVS4pRHCE5pAmdX7T2YEbOf1j0p7cMCDo1VdM4r.jpg)
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.