This could also mean welding stainless steel to galvanized steel, or vice versa. The second situation is when zinc from a galvanized coating and stainless steel come into contact in temperatures that cause the zinc to … Galvanized steel usually stands up well to water exposure—as long as it’s not salt water. We are ready to help. The first instance is when stainless steel that has been galvanized is welded. Specialized construction and fabrication needs may put galvanized steel in contact with stainless steel, aluminum, copper, and other weathering steel.. Please contact us today for more information. 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. When aluminum makes contact with stainless steel fasteners, corrosion can occur. 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. RE: Galvanized and Stainless Steel Bolts Interaction stanweld (Materials) 3 Sep 13 17:20 Galvanized steel can be paired with many other metals. Another option is to create a physical a physical barrier between the metal and the concrete. However, stainless steel is reactive with aluminum, and when a stainless steel screw is in contact with an aluminum base metal, the aluminum is likely to corrode. In the stainless steel causing it to rust. 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. Stainless steel is an alloy of carbon steel that is, itself, resistant to corrosion. 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). Share this post. Galvanized steel is a steel with a layer of zinc deposited on the surface. 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. Stainless Steel is an alloy of iron with at least 11-12% chromium. The stainless will accelerate the corrosion of the galvanized plates around the contact area. The juxtaposition of galvanized steel with other metals can result in a condition called galvanic corrosion. Corrosion develops when two dissimilar materials are combined in a corrosive electrolyte. Categories: Blog, Stainless Product October 10, 2018. 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