... of thermal conductivity at +40 °C = 0,037 W/mK, at 0 °C, = 0,033 W/mK.6 Excellent UV and weathering ... closed cellDensity lb/ft.3 (g/cm3)3-65 (0.048-0.096) ASTM D 1667Thermal conductivitymean temp.-4°F(-20 ... A 1412 DIN 52613K.Value0.22(0.032)0.23 (0.034)0.25 (0.037)0.26(0.038)0.27 (0.039)Service temperature (-57°C to ... even at -200°CWater vapor permeability (perm-in)0.10 perm-in (0.15 x 10-12)ASTM C 355, E ...