Nominal Stiffness Pipe BeamMoment Pipe Size Factor* Stiffness of Inertia** ( in) ( mm) ( lb·in) ( N·m) ( psi) ( MPa) ( in4) (106 mm4) 2 50 620 70 2900 20.0 0.59 0.25 3 80 620 70 860 5.93 1.99 0.83 4 100 1360 154 890 6.14 5.50 2.29 6 150 1360 154 270 1.86 18.10 7.53 8 200 1890 214 170 1.17 45.10 18.8 10 250 1890 214 86 0.59 88.60 36.9 12 300 1890 214 51 0.35 149 62.0 14 350 2230 252 46 0.32 208 86.6 16 400 3250 367 0045 0.31 353. 147 * Per ASTMD2412. ** Use these values to calculate permissible spans. Pipe Property Units Value Method Thermal conductivity Pipe wall Btu in/(hr ft2 °F) 2.3 Ameron W/m °C 0.33 Thermal expansion Linear 10-6 in/in/°F 10 Ameron 10-6 mm/mm/°C 18 Flow coefficient Hazen-Williams 150 Absolute roughness 10-6 ft 17.4 – 10-6 m 5.3 – Specific gravity – 1.79 D792 Density lb/in3 0.07 Grounding resistance @ 1500 volts 106 ohms 1.0* Shielding capability volts 100* * Maximum values when measured in accordance with Annexes 2 and 3 of proposed ASTM standard for marine antistatic pipe. Typical Physical Properties Typical Pipe Performance Typical Mechanical Properties 70 °F 200 °F Pipe Property Units (21 °C) (93 °C) Method Circumferential Tensile stress at weeping 103 psi 24.0 18.5 ASTM D1599 MPa 165 128 Tensile modulus 106 psi 3.65 3.20 GPa 25.2 22.1 Ameron Poisson’s ratio 0.56 0.70 Ameron Longitudinal Tensile strength 103 psi 8.50 6.90 ASTM D2105 MPa 59.0 44.6 Tensile modulus 106 psi 1.60 1.24 ASTM D2105 GPa 11.1 8.50 Beam apparent elastic modulus 106 psi 1.70 1.00 ASTM D2925 GPa 11.7 6.90 Hydrostatic design basis (cyclic)* 103 psi 6.0 — ASTM D2992A MPa 41.4 — * At 150°F (66°C). 3
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