Austenitic Stainless Steels for Timber Fixings

The causes of metal corrosion in wood are described and the hazard that acetic acid can be to metals when liberated from hardwoods such as oak, western red cedar and Douglas fir. Stainless steel types 1.4301 (304) and 1.4401 (316) can normally be considered for timber fixings, but timber immersed in river or seawater may require 316 or superaustenitic grades such as 1.4547 (254SMO) for fasteners. Swimming pool building roof areas are also a special case. Stress corrosion cracking (SCC) resistant grades such as 1.4539 (904L) or 1.4547 (Avesta 254SMO) must be considered for load bearing or stressed fasteners.

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