Choose Right Materials for Lightning Rods
Author:sanyuan Time:2017-05-24 10:47:17
Metal/Alloy Material Used To Make Lightning Rod
- Copper (Pure)
- Copper plated steel
- Hot-dip galvanized steel
- Stainless steel
Introduction of the Lightning Rod Materials
This is the best conductor among these six, also is the most expensive one. Chemistry property of the pure copper is very stable, and it has good mechanical properties. Pure copper under most circumstances are anti-erosion, except when having direct contact with organic sulfides.
Copper plated steel:
This is a compromise between performance and price. It almost combines Copper's good conductivity and steel's toughness, but its tenacity is not good as pure copper, and is a little more easily corroded by sulfides.
Hot-Dip Galvanized Steel:
Galvanized Steel is comparable with pure copper in tenacity; however, because of the use of zinc, Galvanized Steel can suffer from electrochemical corrosion. It will be corroded more quickly when exposed to chloride, or have direct contact with copper.
Stainless steel has a balanced performance. Its tenacity is good and anti-erosion property is okay. It does not have electrochemical corrosion effect, and is only sensitive to Chloride.
Aluminum is a good conductor, but when it is oxidized, the aluminum oxide produced on the surface of the aluminum will influence its conductivity. It also has electrochemical corrosion effect. However, it has a good anti-erosion property against sulfides, chlorides, thus can be used for environments where steel or copper cannot be applied.
Lead is similar to aluminum in the application of lightning rod. Since lead has a strong biotoxicity, the use of lead lightning rod is strictly limited to harsh environment where even aluminum is not qualified.
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