Unless the metal has a large enough cross section as judged by a fall protection Qualifed Person, every steel part should be coated with zinc to protect it from salt, air, or other common corrosion and to prolong its useful service life. Because of the possibility of chemical reactions causing corrosion, aluminum parts should be anodized if the parts may come into contact with steel.
Stain-less steel cables, springs, and other critical parts are favored over regular steel parts, but many zinc-aluminum alloys also can work, depending on the salinity, frequency, and duration of exposure.
See “Introduction to Fall Protection, 4th Edition” page 257.
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