Kegan....the best I can come up with is 95 pounds per Strand
Brownell Fast Flite + Less Creep Bowstring Material is Stronger than steel, fast flite offers the greatest arrow speed 5 to 12 feet per second and durability with reports of 30,000 shots. Fast Flite Plus has a breaking strength of 95 lbs. with a diameter of .015
Brownell 450 Plus is 155 pounds