Thanks for all the info. I had read a lot of that, but not all. The conclusion seems to me to be that they could have published conversions, they just didn't choose to bother.
I am also unable to find any data on the effects of instantaneous high pressures, generated by a gas medium rather than a mechanical load, on modern steels. Only real world situation I can think of is firearms. I seriously wonder that at a level below the burst pressure that the steel doesn't react more like a crusher than a transducer, and that before the instantaneous peak can begin to produce the effects overstress on the steel, the peak is past.
I do know I have talked to some propellant engineers with a couple of the manufacturers, and I still use the old higher load data. When loading metallics I start seeing pressure signs at the same points I did 35 years ago.
