|
2:1 Semi-Rigid PVDF Dimensions
Minimum Shrink Temperature: 150 °C
SIZE
(In.) |
EXPANDED |
RECOVERED |
MINIMUM INTERNAL DIAMETER |
MAXIMUM INTERNAL DIAMETER |
MINIMUM TOTAL WALL THICKNESS |
in. |
mm |
in. |
mm |
in. |
mm |
3/64 |
0.047 |
1.2 |
0.023 |
0.58 |
0.007 |
0.180 |
1/16 |
0.063 |
1.6 |
0.031 |
0.79 |
0.007 |
0.180 |
3/32 |
0.094 |
2.4 |
0.046 |
1.17 |
0.010 |
0.250 |
1/8 |
0.125 |
3.2 |
0.062 |
1.57 |
0.010 |
0.250 |
3/16 |
0.188 |
4.8 |
0.093 |
2.36 |
0.010 |
0.250 |
1/4 |
0.251 |
6.4 |
0.125 |
3.18 |
0.010 |
0.250 |
3/8 |
0.377 |
9.6 |
0.187 |
4.75 |
0.011 |
0.279 |
1/2 |
0.503 |
12.8 |
0.250 |
6.35 |
0.011 |
0.279 |
3/4 |
0.759 |
19.3 |
0.375 |
9.53 |
0.014 |
0.356 |
1 |
1.000 |
25.6 |
0.500 |
12.7 |
0.016 |
0.406 |
2:1 Flexible PVDF Dimensions
Minimum Shrink Temperature: 125°C
SIZE
(In.) |
EXPANDED |
RECOVERED |
MINIMUM INTERNAL DIAMETER |
MAXIMUM INTERNAL DIAMETER |
MINIMUM TOTAL WALL THICKNESS |
in. |
mm |
in. |
mm |
in. |
mm |
3/64 |
0.047 |
1.2 |
0.023 |
0.58 |
0.008 |
0.203 |
1/16 |
0.063 |
1.6 |
0.031 |
0.79 |
0.008 |
0.203 |
3/32 |
0.094 |
2.4 |
0.046 |
1.17 |
0.009 |
0.229 |
1/8 |
0.125 |
3.2 |
0.062 |
1.57 |
0.009 |
0.229 |
3/16 |
0.188 |
4.8 |
0.093 |
2.36 |
0.009 |
0.229 |
1/4 |
0.251 |
6.4 |
0.125 |
3.18 |
0.011 |
0.279 |
3/8 |
0.377 |
9.6 |
0.187 |
4.75 |
0.011 |
0.279 |
1/2 |
0.503 |
12.8 |
0.250 |
6.35 |
0.011 |
0.279 |
3/4 |
0.759 |
19.3 |
0.375 |
9.53 |
0.014 |
0.356 |
1 |
1.000 |
25.6 |
0.500 |
12.7 |
0.016 |
0.406 |
KynarŽ Specification Values
PROPERTY |
TEST METHOD |
VALUE |
| Physical |
Unaged |
Tensile Strength |
ASTM D 638 |
Min. 5,000 psi |
| Elongation |
Min. 150% |
| Aged |
Tensile Strength |
180° C / 168 hrs |
Min. 70% of the value of unaged specimens |
| Elongation |
| Deformation |
|
150° C / 1 hr |
Max. 50% |
| Heat shock |
|
300° C / 4 hrs |
No cracking, flowing or dripping |
| Cold bend |
|
-55° C / 4 hrs |
No cracking |
| Flexibility |
|
180° C / 168 hrs |
No cracking |
| Secant modulus |
|
2% strain |
Min. 120,000 psi |
| Electrical |
Dielectric strength |
|
Room Temp. |
Min. 23.6kV / mm |
| Volume resistivity |
|
- |
Min. 10 |
| Chemical |
Copper corrosion |
|
180° C / 168 hrs |
No corrosion |
| Copper stability |
|
180° C / 168 hrs |
No sign of degradation |
| Flammability |
|
VW-1 |
Pass |
Limiting Oxygen Index (LOI)
The ratio of how much oxygen - as compared to other gases - needs to be present in the air surrounding a particular material in order for that material to burn. The fact that Earth's normal atmospheric air contains around 21% oxygen is used a reference point when materials are classified into burn categories that are based on Limiting Oxygen Index. Substances that are combustible in air containing less than 21% oxygen are considered flammable, while those that burn in the range of anything greater than 21% but less than 28% are typically labeled "slow burning". Any material with an LOI that exceeds 28% is classified as self-extinguishing.
In the table below, you'll find a list of polymers commonly found in our heat shrink tubing and braided sleeving products, along with their LOIs and the burn categories each falls into.
MATERIAL |
ALTERNATE NAME |
LOI |
CATEGORY |
ECTFE (Ethylene chlorotrifluoroethylene) |
Halar |
64% |
Self Extinguishing |
Nomex |
N/A |
28% |
Slow Burning |
Nylon 6:6 |
N/A |
Ranges fron 24-29% |
Slow Burning to Self Extinguishing |
PET (Polyethylene Terephthalate) |
Mylar (film), Dacron (fiber) |
Ranges from 21-34% |
Slow Burning to Self Extinguishing |
Polyethylene (PE) |
N/A |
17% |
Flammable |
Polypropylene (PP) |
polythene (in the UK) |
17% |
Flammable |
Polytetrafluoroethylene (PTFE) |
Teflon |
95% |
Self Extinguishing |
Polyvinyl Chloride (PVC) |
N/A |
Ranges from 45-49% |
Self Extinguishing |
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