The entire point of the Spyderco Salt series is to make the knives out of corrosion resistant steel.

"A myth in the knife world is that out there somewhere there is a super-steel with high performance cutting ability that doesn't rust. A steel foundry in Japan made the myth a reality by intoducing H-1 steel. H1 steel is a PH steel meaning it is a precipitation-hardened steel. It's naturally hard without heat-treating and with 1% nitrogen instead of carbon it cannot rust. H1 holds a sharpened cutting edge equivalent to many premium carbon steels but without developing rust or pitting.

The Spyderco Salt I, Tasman Salt, Atlantic Salt and Pacific Salt knives have H1 steel blades with an enlarged Spyderco blade hole to facilitate opening with gloved or wet hands. They have lightweight fiber reinforced nylon handles with checkerboard texturing, Boye dent lock backs, and side to side reversible pocket clips mounted at the butt end. There is a lanyard hole for backup thong attachment when working in and around water."