 BURST PRESSURE CHART FOR PTFE & FEP, PFA TUBINGS

BURST PRESSURE FORMULA:

P  = BURST PRESSURE                              T = TENSILE STRENGTH

X = O.D.                                                      Y = I.D.
2                                                                 2

P = T(x² - y²)
y² (1 +)
y²

TENSILE STRENGTH VALUES:

TFE   ------    2,500PSI
FEP   ------    3,000PSI
PFA   ------    4,000PSI
ETFE  ------    6,500PSI
PEEK  ------  13,300PSI

The above values are based on ambient temperatures, and they do
not take into consideration steam pressure, altitude and the like.

THE WORKING PRESSURE FOR A SPECIFIC TUBING = BURST
4

Where: F = The breaking force of the specimen in pounds.
D = The diameter of a solid or single strand conductor (inches)
.

TENSILE STRENGTH CALCULATIONS FOR A STRANDED CONDUCTOR:

PSI  =                      F
(d)2  x No. of strands x .7854

Where: F = The breaking force of the specimen in pounds.
d = The average diameter of a single strand (inches).