Polymer gate hinges
Polymer gate hinges are a relatively new arrival on the gate hardware scene, but they are becoming a popular choice for lower security gates because, unlike steel hinges, they don't rust.
Polymer gate hinges are available in a variety of designs and options including self-closing hinges and for a variety of different gate weights. If you are planning to use this kind of hinge, be sure you know how heavy the gate you will be installing is, so that you can be sure you get the right kind of hinges for your gate.
This type of hinge is made of a special type of plastic called polymer with stainless steel for the parts that require metal, which is stronger than what you would expect to find in other plastic products. It's also UV-resistant and very durable, so this type of hinge can last many years without any trouble.