Can abrasion resistant AR400 steel be hot-dip galvanized?
There is substantial risk in galvanizing AR400 steel, or for that matter any AR steels. The tensile strength of AR400 is in the range of 180,000 to 200,000 psi and the steel has a hardness of approximately 400 Brinell. This means the grain structure is very small and consequently hydrogen from the pickling acids in the galvanizing process are trapped in the grain structure. This tends to make the galvanized AR400 steel brittle.
More Info on Hydrogen Embrittlement
© 2019 American Galvanizers Association. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel. This material provides general information only and is not intended as a substitute for competent professional examination and verification as to suitability and applicability. The information provided herein is not intended as a representation or warranty on the part of the AGA. Anyone making use of this information assumes all liability arising from such use.