PVC Duct

PVC Duct Physical Properties
GENERAL Value Test Method
Cell Classification 12454 ASTM D1784
Maximum Service Temp. 140°F  
Color Dark Gray  
Specific Gravity, (g/cu.cm @ 73°F) 1.40 +/-.02 ASTM D792
Water Absorption % increase 24 hrs @ 25°C 0.05 ASTM D570
Hardness, Rockwell 110 - 120 ASTM D785
Poisson's Ratio @ 73°F 0.410  
Hazen-Williams Factor C =150  
MECHANICAL
Tensile Strength, psi @ 73°F 7,450 ASTM D638
Tensile Modulus of Elasticity, psi @ 73°F 420,000 ASTM D638
Flexural Strength, psi @ 73°F 14,450 ASTM D790
Compressive Strength, psi @ 73°F 9,600 ASTM D695
Izod Impact, notched ft-lb/in @ 73°F 0.75 ASTM D256
THERMAL
Coefficient of Linear Expansion (in/in/°F) 2.9 x 10-5 ASTM D696
Coefficient of Thermal Conductivity
   (Cal.)(cm)/(cm2)(Sec.)(°C)
   BTU/in/hr/ft.2/°F
   Watt/m/°K
3.5 x 10-4
1.02
0.147
ASTM C177
Heat Deflection Temperature Under Load (264psi, annealed) 170 ASTM D648
Specific Heat, Cal./°C/gm 0.25 ASTM D2766
ELECTRICAL
Dielectric Strength, volts/mil 1,413 ASTM D149
Dielectric Constant, 60Hz, 30°F 3.70 ASTM D150
Volume Resistivity, ohm/cm @ 95°C 1.2 x 1012 ASTM D257
GF Harvel PVC Pipe is non-electrolytic
FIRE PERFORMANCE
Flammability Rating V-0 UL-94
Flame Spread Index <10  
Flame Spread 0-25 ULC
Smoke Generation 80-225 ULC
Flash Ignition Temp. 730°F  
Average Time of Burning (sec.) <5 ASTM D635
Average Extent of Burning (mm) <10  
Burning Rate (in/min) Self Extinguishing
Softening Starts (approx.) 250°F  
Material Becomes Viscous 350°F  
Material Carbonizes 425°F