Are all stainless steels acceptable for use with pressure-treated timber?
All stainless steels may not be acceptable for use with pressure treated timber. Testing has shown that Types 304 and 316 stainless steels perform very well with CCA-C, ACQ-C, ACQ-D Carbonate, CBA-A, and CA-B treated timbers. Type 316 stainless steel contains slightly more nickel than other grades, plus 2-4% molybdenum, giving it better corrosion resistance in high chloride environments prone to cause pitting such as environments exposed to sea water.
