Galvanized steel can be paired with many other metals. Stainless steel resists corrosion due to its naturally occurring protective layer ('Chromium Oxide'). Specialized construction and fabrication needs may put galvanized steel in contact with stainless steel, aluminum, copper, and other weathering steel.. Let us assist you in making your complex design a reality. This can occur when certain materials such as aluminum are in contact with stainless steel. Share this post. Stainless Steel is an alloy of iron with at least 11-12% chromium. Galvanized steel is a steel with a layer of zinc deposited on the surface. Stainless steel is an alloy of carbon steel that is, itself, resistant to corrosion. When contaminants settle on stainless steel, depending on the grade and the surface finish, these can damage this protective layer, allowing oxygen to react with the iron. The second situation is when zinc from a galvanized coating and stainless steel come into contact in temperatures that cause the zinc to … In the stainless steel causing it to rust. If your design calls for a combination of stainless steel and carbon steel, we can do it. When aluminum makes contact with stainless steel fasteners, corrosion can occur. So, yes, leaving stainless steel in contact with high carbon (non-stainless) steel can cause the stainless to corrode (although not by drawing carbon to the surface- your informant is likely confusing galvanic corrosion with sensitization, but that's another long-winded explanation). However, the two metals can be used together, as this guide shows. RE: Galvanized and Stainless Steel Bolts Interaction stanweld (Materials) 3 Sep 13 17:20 We are ready to help. Categories: Blog, Stainless Product October 10, 2018. A heavy factory-applied coating on aluminum or galvanized steel can prolong its life, but it’s best to use a more durable metal such as copper or stainless steel in direct contact with concrete. Corrosion develops when two dissimilar materials are combined in a corrosive electrolyte. The first instance is when stainless steel that has been galvanized is welded. This could also mean welding stainless steel to galvanized steel, or vice versa. Please contact us today for more information. Stainless steel is a nobler metal (Cathodic) than Galvanised steel (Anodic) Galvanic corrosion will occur in the less noble metal Generally speaking, this is a slow process which can be monitored and dealt with before it develops into an unsightly or serious issue e.g. Stainless steel, on the other hand, is made by adding chromium to molten steel. The juxtaposition of galvanized steel with other metals can result in a condition called galvanic corrosion. 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