![]() ![]() Separating the metals that are incompatible reduces the risk of these cells deteriorating. The most common solution to prevent galvanic corrosion is to select metals that are close together in the galvanic series. ![]() However, there are ways to use stainless steel and aluminum together while preventing corrosion. This can occur when certain materials (such as aluminum) are in contact with stainless steel. Corrosion develops when two dissimilar materials are combined in a corrosive electrolyte. It’s well known that bringing the two metals into contact can cause corrosion. Passivation can also be used to create the passive film on the fastener for better corrosion resistance.Īs a leading stainless steel fastener specialist and partnered with manufacturers and suppliers of the full range of stainless steel and aluminum use across all industries Marsh Fasteners can help you ensure that you use the best products with the highest anti-corrosion qualities.Ĭustomers often ask whether it’s possible or advisable to use stainless steel fasteners with aluminum. Discoloration can be prevented by the use of insulation and regular maintenance. Insulating washers are also effective in isolating the two dissimilar materials and creating a relatively safe surface area.Īlong with corrosion, discoloration of stainless steel may occur when combined with aluminum. A good way to reduce corrosion is to use an isolating coating or paint on the aluminum and the steel to isolate them electrically. However, there are methods that can be used to reduce this effect. Severe corrosion is likely to take place in a marine environment. According to the levels of galvanic corrosion, stainless steel that comes into contact with materials such as copper is less likely to be a risk than when it is in contact with aluminum.Īlthough aluminum reacts negatively to stainless steel, large surface areas of aluminum to stainless steel can be acceptable depending on local environmental conditions.
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