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Case Study Wire Rope


DeNOVUS L.L.C.
1 Hunthausen Drive, P.O. Box 280, Moberly, MO 65270

TELE: (660) 269-3700, (800) 457-1363, Fax (660) 269-3737



The information given here is considered to be correct and is offered for your consideration, investigation and verification. No
warranties are expressed or implied since the use of our products is beyond our control. Statements concerning the use of DeNOVUS
products are not to be construed as recommending the infringement of any patent.
Revision Date: August 9, 2002

DeNOVUS
CASE STUDY: WIRE ROPE



PROBLEM
U.S. Navy and environmental regulations
required changes in the lubricants used for wire
ropes. The goal was to develop and test
products that were nontoxic, environmentally
safer and which would reduce corrosion
damage. Wire rope is manufactured from 1070
steel wire cold drawn to 280,000 P.S.I. tensile.

TESTING
Specialized cyclic tests were developed to
combine stress and environmental factors to
accelerate corrosion. Toxicity and
biodegradability studies where conducted by
certified laboratories.

DISCUSSION
The corrosion test procedures proved to be
very aggressive by generating a loss of up to
83% in strength of the wire ropes.
DeNOVUSs E-1270EPL and systems
maintained 93.4% to 99.2% of ultimate
tensile strength in this testing. Toxicity tests
demonstrated that E-1270EPL is not toxic at
concentrations up to 100 ppm.
Biodegradability testing revealed that E-
1270EPL is between 15% and 57%
biodegradable.

CONCLUSION
Based upon the results of this testing the
Navy is installing DeNOVUS products on
aircraft carrier deck edge elevator
applications as improvements. Previously this
equipment has experienced high failure rates
due to corrosion and has required extensive
maintenance. Testing indicates that E-
1270EPL will reduce maintenance and
prolong the life of this equipment.