https://www.ropeiq.co.uk A brief overview of the types of corrosion in wire rope and relevant actions to take.

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Wire Rope Corrosion -
Inspection Discard Criteria

2. 1
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None
Symptoms - No corrosion visible on
the exterior of the rope after wiping it
clean.
Actions to take - None
ISO 4309 Wire
Rope Status
0%

3. 2
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Heavy External
Symptoms - The surface of the wire
rope displays surface oxidation: the
rope is rusty. The rope will also be
rough to touch.
Actions to take - Monitor the rope
more closely for an increase in the
level of corrosion.
ISO 4309 Wire
Rope Status
60%

4. 3
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Severe External
Symptoms - Heavy pitting and slack
wires.
Actions to take - Remove the rope
from service immediately. The rope is
dangerous to use.
ISO 4309 Wire
Rope Status
100%

5. 4
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Internal
Symptoms - Corroded matter
emanating from the valleys between
strands.
Actions to take - Discard
immediately or perform a thorough
internal examination of the rope.
ISO 4309 Wire
Rope Status
100%

6. 5
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Fretting
Symptoms - Similar to internal
corrosion but with the presence of dry
red powder.
Actions to take - Discard
immediately or perform a thorough
internal examination of the rope.
ISO 4309 Wire
Rope Status
100%

7. 6
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