Ferrous metals (Iron and Steel) rust quickly when exposed to air and moisture, so one way to prevent rusting hinges is to use an alloy metal, such as stainless steel, that is designed to prevent rusting. However, if you already have hinges installed and don’t want to change them, the best way to prevent them from rusting is by keeping air and moisture away from the surface. Traditionally people have kept their hinges painted to keep them from rusting but people also use grease and oil to block out moisture and air.
However, this upkeep can be time consuming and will need re-coating after continuous or heavy use. Therefore installing stainless steel or, even better, marine-grade stainless steel is the best way to stop hinges from rusting. Doorstuff have a wide range of stainless steel hinges at reasonable prices so check out our website to see how you can eliminate rusting hinges from your life.