I was being kind of sparse in details, sorry. Having a material that can self support itself into orbit can potentially unlock practical variations of: http:/

I was being kind of sparse in details, sorry. Having a material that can self support itself into orbit can potentially unlock practical variations of: http://en.wikipedia.org/wiki/Steam_rocket http://en.wikipedia.org/wiki/Steam_rocket whose main problem is: The simplest design has a pressurised water tank where the water is heated before launch, however, this gives a very low exhaust velocity since the high latent heat of vapourisation means that very little actual steam is produced and the exhaust consists mostly of water, or if high temperatures and pressures are used, then the tank is very heavy. Although, that would also require the material to be very heat resistant as well. Which might be problematic. Compressed air might also work at that sort of level of material as well. At least for initial launch stages until you need to switch over to another type of propellant (or a more controllable engine).