Composites are corrosion proof, but since carbon fibers are electrically conductive, aluminum strands in contact with it would corrode in the presence of an electrolyte such as water. This is why a suitable galvanic corrosion barrier as per ASTM B987 requirements (such as the glass fiber layer on HVCRC®), or an aluminum tubing providing similar protection is absolutely required for a durable performance of the line.
Why is a galvanic corrosion protection required on the composite core?
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