OUR JACKETS ARE AMONG THE STRONGEST IN THE INDUSTRY PHYSICAL PROPERTIES TENSILE STRENGTH - AT BREAK (ASTM) D638 -99 - 24,500 ( PSI) TENSILE MODULUS - ( YOUNGS ) - 1740000 (PS1) ELONGATION -AT BREAK - (PSI) (%) 2.1 FLEXURAL STRENGTH -AT YIELD (ASTM) D790-99 - 28,400 (PSI) (MAX LOAD) FLEXURAL MODULUS ( TANGENT ) - 1050000 (PSI) 500 HR EXPOSURE   (ASTM G153)  -  (PASS- NO CHANGE AFTER 500HOURS OF EXPOSURE BARCOL HARDNESS (ASTM) D 2583-95 - 45 IZOD IMPACT STRENGTH (ASTM) D 265-00 ( METHOD A) - 26 (FT:LB/IN) WATER ABSORPTION (ASTM) D 570-98 - 1% MAX     WALL THICKNESS (FRP JACKET) - 1/8”