Table 89. Continued. 



Rope 



No. 



Alloy" 



«=— 



Diameter 

 <in.) 



Construction 



Stress 



on Rope 



(lb) 



(day) 



Depth 

 (ft) 



Breaking Load 



Remarks 



Original 

 (lb) 



(lb) 



% Change 



36 



Improved plow steel 



lubricated 



0.326 



1 x 19 



2,900 



1,064 



6,000 



14,300 



15,300 



♦ 7 



No stress failure; outside: 100% rust; inside: bright; tensile 



37 



Plow steel 



Zn 0.83 oz/ft 2 



0.340 



1 x 19 



2.100 



751 



6,000 



10,400 



10,900 



+ 5 



No stress failure; outside: grey with 5% scattered rust; 

 inside: grey; tensile fracture. 



37 



Plow steel 



Zn 0.83 oz/ft 2 



0.340 



1 x 19 



2,100 



1,064 



6,000 



10,400 



8.600 



-17 



No stress failure; outside: 20% rust. 80% yellow; inside: grey; 

 tensile fracture. 



38 



Plow steel 



Zn 1.50 oz/ft 2 , 

 electrogalvanizcd 



0.335 



1 x 19 



2,200 



751 



6,000 



10,900 



11,100 



+ 2 



No stress failure; outside: 50% rust. 50% grey; inside: grey; 

 tensile fracture. 



38 



Plow steel 



Zn 1.50 oz/ft 2 , 

 clectrogalvanized 



0.335 



1 x 19 



2,200 



1,064 



6,000 



10,900 



11,600 



+6 



No stress failure; outside: 95% rust; inside: grey; tensile 



39 



Plow steel 



Al 0.38 oz/ft 2 



0.335 



1 x 7 



1,400 



751 



6.000 



6.900 



7.000 



+ 1 



No stress failure; outside: white corrosion producrs with 10% 

 rusr stains; inside: gtey; tensile fracture. 



39 



Plow steel 



Al 0.38 oz/ft 2 



0.335 



1 x7 



1,400 



1,064 



6,000 



6.900 



6,500 . 



-6 



No stress failure; outside: white corrosion products plus 50% 

 rust; inside: grey and light rust, tensile fracture. 



40 



Plow steel 



Zn 0.17 oz/ft 2 . 

 polyvinyl chloride jacket 



0.195 



7x7 



250 



751 



6,000 



1,300 



1,200 



-8 



No stress failure; PVC. dull; some light rust on strands under- 

 neath PVC; rensile fracture. 



40 



Plow steel 



Zn0.17oz/fr 2 . 

 polyvinyl chloride jacket 



0.195 



7x7 



250 



1.064 



6,000 



1,300 



1,100 



-15 



No stress failure; PVC. dull; some light rust on strands under- 

 neath PVC; tensile and torsion fractures. 



41 



Aitcraft cable 



bare, Type 316. lubricated 



0.135 



7x7 



3 50 



751 



6.000 



1,700 



1,400 



-18 



No stress failure; outside: original metallic lustre inside 

 bright; tensile fractute. 



41 



Aircraft cable 



bare, Type 316. lubricated 



0.135 



7x7 



350 



1.064 



6,000 



1.700 



1,000 



-41 



No sttess failure; outside: 50% rust, crevice corrosion; inside: 

 rusted wires, some broken, crevice corrosion, tensile and 

 btittle fractures. 



42 



Aircraft cable 



bare, 18O14Mn-0.5N 



0.395 



7x 19 



2,500 



751 



6,000 



12,400 



11,400 



-8 



No sttess failures, outside: few rust spots, inside, brighr; 



42 



Aircraft cable 



bare. 18Cr-14Mn-0.5N 



0.395 



7x 19 



2,500 



1,064 



6,000 



12.400 



12.500 



+ 1 



No stress failure, ourside: considerable rust and broken wires; 

 inside: some broken wires in all strands; torsion fracture. 



43 



Improved plow stee! 



AI0.11 oz/ft 2 



0.1875 



7x7 







402 



2,500 



3.900 



3.500 



-10 



Outside: white corrosion products with light rust stains. 



44 



Improved plow steel 



Al 0.19 oz/ft 2 



0.250 



1 X 19 







402 



2.500 



8,800 



7,800 



-11 



Outside: mottled white and grey 



45 



Improved plow steel 



Al 0.19 oz/ft 2 



0.3125 



1 X 19 







402 



2.500 



14.000 



13,000 



-7 



Outside: grey with some white corrosion products. 



46 



Type 304 



9OCu-10Ni, 0.0007 in., 

 0.50 oz/ft 2 



0.1875 



7x7 







402 



2.500 



3,900 







Outside: green. 



