Based on 2,000 hours of salt testing, the Tantalum Deposition treatment provides excellent resistance to salt spray and is used to qualify components for offshore and marine applications. In addition, all Tantalum deposited parts are subjected to a 100% quality check, including testing in 20% hydrochloric acid at 75 degree . including immersion in 20% hydrochloric acid at 75 degree for 48 hours. for 48 hours at 75 degree in 20% hydrochloric acid. This acid test alone would severely corrode 316 stainless steel. Tantalum deposits provide superior corrosion resistance to protect stainless steel materials from corrosion. This should be considered as protection for fasteners in marine and offshore applications.