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Hostile Environment
Stainless
Steel Cables
MP-35N
Electrical
Resistance Considerations
Operating
Procedures
Applications
Mechanical Properties
Metallurgy
Figures 1, 2, 3, 7,8
Physical Properties
SUPA 70
SUPA 75
SUPA 70, 75, 80
Manual Menu
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MANUFACTURER: BRIDON ROPES LIMITED
WiRELINE GRADE: BRIDON SUPA 70
| STEEL COMPOSITION |
| Element |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
N |
| Weight % |
0.02
max |
1.0
max |
2.0
max |
0.04
max |
0.005
max |
19.5-20.5 |
6.0-6.5 |
0.50-1.00 |
17.50-18.50 |
0.18-0.22 |
|
WIreline
diameter
inch |
0.092 |
0.108 |
0.125 |
|
MECHANICAL PROPERTIES |
|
Minimum breaking load Ibf |
1600 |
2100 |
2175 |
|
Typical breaking load Ibf |
1690 |
2250 |
2315 |
|
Minimum UTS N/mm2 |
1660 |
1590 |
1640 |
|
Typical UTS N/mm2 |
1700 |
1700 |
1570 |
|
Yield strength (0.2% P.S.) |
80-90% UTS |
80-90% UTS |
80-90% UTS |
|
Elastic limit |
22-28% UTS |
22-28% UTS |
22-28% UTS |
|
Modulus of elasticity N/mm2 |
16x104 |
16X104 |
16x104 |
|
Recommended safe load |
60% UTS |
60% UTS |
60% UTS |
|
Sheave diameter inch |
11.0 |
13.0 |
15.0 |
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PHYSICAL PROPERTIES
|
|
Density g/cm3 |
8.1 |
8.1 |
8.1 |
|
Coefficient of linear expansion mm/m/°C |
0.17 |
0.17 |
0.17 |
|
Wireline weight Ib/ioooft |
23.29 |
32.1 |
43.0 |
|
Minimum Wireline stretch inch/100fl/100lb |
0.79 |
0.50 |
0.43 |
|
Thermal conductivity W/m.K |
13.5 |
13.5 |
13.5 |
|
Specific heat J/kg.K |
500 |
500 |
500 |
|
Resistivity µOhm. cm |
85.5 |
85.5 |
85.5 |
|
Magnetic permeability |
1.01 |
1.01 |
1.01 |
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CORROSION RESISTANCE |
|
H2S+CO2 |
Excellent - all concentrations |
|
Chloride (Brine, salt etc.) |
Excellent |
|
H2S+CO2 + Chloride |
May be used with caution - risk of stress corrosion
cracking |
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