70 °F 200 °F ASTM Pipe Property Units 21 °C 93 °C Method Nominal Pipe Size 1”, 11/2 ” 2”-6” 1”, 11/2 ” 2”-6” 8”-16” 8”-16” Circumferential Tensile stress at weeping 103 psi 18.50 32.00 - - D1599 MPa 128.00 220.00 - - Tensile modulus 106 psi 3.65 4.20 3.20 3.70 GPa 25.20 29.00 22.10 25.50 Poisson’s ratio 0.56 0.26 0.68 0.32 D2105 Longitudinal Tensile strength 103 psi 8.50 16.00 6.90 13.00 D2105 MPa 58.60 110.00 47.60 90.00 Tensile modulus 106 psi 1.60 3.00 1.24 2.40 D2105 GPa 11.10 20.70 8.60 16.50 Poisson’s ratio 0.37 0.16 0.41 0.20 D2105 Beam apparent Elastic modulus 106 psi 1.70 2.40 1.08 1.77 D2925 GPa 11.70 16.60 6.90 12.20 Hydrostatic design basis (cyclic) 103 psi 6.00 16.001 - - D2992 MPa 41.40 110.00 - - 1) Static 5 Bending Maximum Allowable Turning Nominal Radius1 Deflection, H, for 100-ft Angle Pipe Size ( R) (30 m) Bending Length (α) ( in) (mm) ( ft) ( m) ( ft) ( m) ( deg) 2 50 75 22.9 15.9 4.8 76 3 80 100 30.5 12.1 3.7 57 4 100 200 70.0 6.4 2.0 29 6 150 250 76.2 5.0 1.5 23 8 200 304 93.0 4.1 1.3 19 10 250 379 116.0 3.3 1.0 15 12 300 450 137.0 2.8 0.85 13 14 350 494 151.0 2.5 0.76 12 16 400 564 172.0 2.2 0.67 10 1) Do not bend pipe until adhesive has cured. At rated pressure sharper bends may create excessive stress concentrations. Typical mechanical properties Nominal Stiffness Pipe Beam Moment Pipe Size Factor3 Stiffness3 of Inertia4 ( in) (mm) ( lb•in) (N•m) ( psi) ( MPa) ( in4) (106mm4) 2 50 95 10.7 420 2.90 0.38 0.16 3 80 105 11.9 200 1.40 1.16 0.48 4 100 230 26.9 155 1.10 3.25 1.35 6 150 500 56.5 110 0.76 13.60 5.66 8 200 1288 146.0 114 0.78 40.10 16.70 10 250 1288 146.0 68 0.40 78.60 32.70 12 300 1288 146.0 35 0.24 132.00 55.00 14 350 1759 199.0 36 0.25 194.00 80.90 16 400 2761 312.0 38 0.26 338.00 141.00 1) Based on structural wall thickness. 2) At 150°F (66°C). 3) Per ASTM D2412. 4) Use these values to calculate permissible spans. Bending radius α α H S c L
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