I’m presently trying to design a vehicle for a 200m+ depth rating. As stated in the product description of foam R-3312, it is tested up to 182m with coating. I would like to know the actual operating range of R-3312, whether it can withstand greater depths or whether it was tested only up to 182m. R-3312 has a compressive strength of 2750 psi. Does it mean it can withstand a depth of 270 m without any property change? or does any other factor needs to be considered?
Please provide some insight.