Why you need stainless steel chain

While stainless steel is a more expensive option when it comes to chain, it will last much longer than regular galvanized chain.

It goes back to that old saying, "A chain is only as strong as its weakest link". While a regular chain will get plenty of use before one of the links weaken, a stainless steel chain has tough corrosion protection. This makes it the perfect choice of chain for a marine environment such as boat anchors. Even if you live close to the ocean, the salty breeze can seriously shorten the life of a chain if it isn't made from stainless steel. 
If you are using your chain in conjunction with an expensive piece of equipment such as a boat, you will see instantly the long term value in stainless chain. Also, if the chain is being used to lift heavy objects, you will have piece of mind that your chain will not weaken like other types of chain. 
There are many different grades of stainless steel, 304 being the most common. However, if you were using the chain for use in salt water the 316 grade is more prone to rust.
Rust resistance isn't the only advantage of buying chains in stainless steel, there are many other advantages such as it's ability to withstand high temperatures. This means it is fire/heat resistant and the chain will retain it's strength under these conditions. 
Another great thing about stainless steel is that it is both hygienic and aesthetically appealing, so it can be used in places such as hospitals, kitchens etc.