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Galvanic Corrosion Protection Tape – answer to corrosion issues?


Corrosion is a massive issue in many industries, with solutions being rather expensive. Here we announce our galvanic corrosion protection tape!

What is Meant by Galvanic Corrosion?

Put two different metals, say aluminium and steel, in contact in a wet environment, and the result is predictable – corrosion. 


Is Galvanic Corrosion the Same as Rust?

Specifi­cally, a phenomenon known as galvanic corrosion will occur when metals with different electrode potentials are in contact in an electrolyte (imagine the aluminium sheet floor fixed to the steel frame of a trailer on a wet road in winter). Rust is a type of galvanic corrosion when iron oxidises with water.


How do you get Rid of Galvanic Corrosion?

It’s possible to get rid of galvanic corrosion, but it’s easier to take steps to prevent galvanic corrosion from occurring. You do this with galvanic corrosion tape. You can get rid of corrosion using injection techniques using sodium nitrite or sodium molybdate which can dissolve the build-up.


How can you Prevent Galvanic Corrosion?

If measures are not taken to isolate the two metals electrically, galvanic corrosion will occur, resulting in damage and possibly danger. There are a number of techniques available to prevent such corrosion, and one of the most obvious is to separate the two metals with a non-conductive material, such as metal separation tape or a protective coating, such as paint or lubricant.

Reduce the surface area of contact between the more and less noble metals.

You can also select materials with similar corrosion potentials.


What Causes Galvanic Corrosion?

The difference in electrical potentials of two connected metals, one a less noble metal than the other. A more noble metal is less reactive such as gold, silver and mercury, these metals have high costs associated, and their other properties make them unsuitable for applications where an alternative metal would be a better fit.

Testing Our Anti-Rust Tape

At Heskins, we know that in the past, our customers have used our plastic materials to achieve this – and we thought we would put this to the test. Samples of steel, stainless steel and aluminium were used in pairs in contact in a marine solution. For each pairing, one pair had the metals in direct contact, and the same pair was used with H3453 galvanic corrosion protection tape between the metals, forming an isolating barrier.

The samples were then left for seven weeks. When examined, as expected, where steel was paired with steel, there was little or no corrosion, and the presence or absence of the H3453 made no difference (see fig.1 & 2).

Results were similar when aluminium was paired with stainless steel. 


Why Should You Choose Heskins Metal Isolator Tape?

H3452 galvanic corrosion tape makes a massive difference, it is a cost-effective material that performs very effectively and provides long-lasting protection to help prevent corrosion between different metals.­ We can supply in roll format or die-cut pieces that act as pads, and virtually any shape or width can be produced.

For more information on metal isolator tape, you can contact us via Live Chat or phone. Alter­natively, complete the contact us form, and we will get back to you as soon as possible.


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