The correct choice, depending on the intended purpose, will dictate chain life and give you peace of mind when anchoring in adverse conditions. cromox stainless steel chains have a breaking force that is twice as high as regular galvanized steel chains. An added benefit is that the chains smooth surface helps prevent the formation of clusters inside the chain locker. Stainless steels are generally regarded as seawater resistant with a PRE-value of at least 33. The cromox Duplex material 1.4462 (AISI 318LN) has a PRE-value of 35 and is therefore seawater resistant up to 94 °F.