How do you read galvanic corrosion chart?
To use the chart, align the metal to be assessed (for the risk of corrosion) in the left column with the Contact Metal listed in the upper row; green represents a lower risk and red represents a higher risk. For a more specific assessment of the risk of galvanic corrosion, please check with other sources.
Which metal in galvanic series gets corroded?
Examples of corrosion. A common example of galvanic corrosion occurs in galvanized iron, a sheet of iron or steel covered with a zinc coating. Even when the protective zinc coating is broken, the underlying steel is not attacked.
What metal is compatible with stainless steel?
When it comes to stainless steel (301, 304 and 310) and brass, they are only two metals apart, which means they can be safely connected together with minimal risk of galvanic corrosion.
Is it OK to use stainless steel bolts in aluminum?
While many people worry that stainless steel fasteners, such as screws, bolts, nuts, or host of other options, won’t work with aluminum due to the risk of galvanic corrosion between the two very different metals, the truth is that stainless steel is the metal of choice for fasteners to secure your aluminum materials.
What do you put between aluminum and steel?
What to put between steel and aluminum. When using stainless steel fasteners with aluminum surfaces, you can prevent corrosion by placing something between the two metals. Plastic or rubber washers or gaskets are good suggestions.
How do you clean galvanic corrosion?
Do not use harsh acidic or alkaline cleaners because they may destroy the finish. Use solvents with care as they may stain the finish. Regardless of the technique, be sure to try a test area first. One recommended technique is to use an abrasive cleaning sponge with mild dishwashing liquid.
Can I use zinc coated bolts on aluminum?
A. Due to their relative closeness in the nobility of metals chart, zinc plating would be the better choice to mate with aluminum. Stainless steel will actually cause the aluminum panel to corrode in an attempt to protect the stainless steel fastener (because it is more noble).
What type of bolts should be used with aluminum?