Share this post. Stainless steel, on the other hand, is made by adding chromium to molten steel. 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. If your design calls for a combination of stainless steel and carbon steel, we can do it. In the stainless steel causing it to rust. Corrosion develops when two dissimilar materials are combined in a corrosive electrolyte. Specialized construction and fabrication needs may put galvanized steel in contact with stainless steel, aluminum, copper, and other weathering steel.. 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. 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). The stainless will accelerate the corrosion of the galvanized plates around the contact area. 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 can be paired with many other metals. Stainless Steel is an alloy of iron with at least 11-12% chromium. We are ready to help. 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. Please contact us today for more information. Galvanized steel is a steel with a layer of zinc deposited on the surface. 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 Galvanized steel usually stands up well to water exposure—as long as it’s not salt water. Stainless steel is an alloy of carbon steel that is, itself, resistant to corrosion. Another option is to create a physical a physical barrier between the metal and the concrete. 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. 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