Our grade N45 neodymium block magnets are plated in order to resist corrosion, and provide you with excellent performance in a wide variety of applications. If grade N42 neodymium magnets aren’t quite strong enough for you, grade N45 block magnets could very well be the answer to your problems. For assistance in selecting the ideal grade of neodymium for your application, please reach out to our experts at BuyMagnets.com. We are happy to help!