CONDUCTORS:
| Bare
Copper |
Tinned Copper
|
| Tinsel Cond. |
Alloys |
COMPOUNDS:
PROPETIES OF INSULATING AND
JACKETING COMPOUNDS
| Compound |
Nominal specific gravity |
Volt breakdown
(volts/Mil |
Abrasion
resistance |
Nominal Dielectric
Constant |
Flame Retardant
Properties |
Flexibility |
| Polyvinyl Chloride (PVC) |
1.37 |
500 |
Good |
5-8 |
Excellent |
Good |
| Polyethylene Solid (PE) |
0.95 |
600 |
Good |
2-3 |
Poor |
Fair |
| Polyethylene Foam |
0.50 |
n/a |
Poor |
1.5 |
Poor |
Good |
| Teflon (FEP) |
2.20 |
600 |
Excellent |
2.1 |
Excellent |
Fair |
| Tefzel |
1.70 |
400 |
Excellent |
2.6 |
Excellent |
Fair |
| Nylon |
1.07 |
450 |
Excellent |
4.0 |
Poor |
Poor |
| Polypropylene |
0.91 |
650 |
Excellent |
2.2 |
Poor |
Poor |
| Polyurethane |
1.10 |
500 |
Excellent |
7.00 |
Poor |
Excellent |
| Thermoplastic Elastomer (TPE) |
1.00 |
650 |
Excellent |
2.4 |
Good |
Good |
| Hytrel |
1.20 |
860 |
Excellent |
6.0 |
Fair |
Fair |
| Silicone |
1.32 |
600 |
Fair |
3.0 |
Fair |
Excellent |
CABLE SHIELD
CHARACTERISTICS
| Shield Method |
Effectiveness
(Low
frequency) |
Effectiveness
(High frequency) |
Coverage |
Flexlife |
EMI/RFI
EMP |
| Copper Braid |
Excellent |
Excellent |
60-95 % |
Fair |
Fair |
| CU. Braid over Aluminum/mylar |
Excellent |
Excellent |
100%^ |
Fair to Poor |
Excellent |
| Aluminum |
Excellent |
Excellent |
100 % |
Poor |
Good |
|
Spiral
Copper
(Serve shield) |
Good |
Fair |
80-98 % |
Good |
Poor |
| Semiconductive |
Fair |
Poor |
100 % |
Good |
Poor |
| Steel Braid |
Excellent |
Excellent |
60-95% |
Fair |
Excellent |
|
