Usually people talk about magnetic confinement schemes or some such thing for fusion reactions presumably because the pressure and temperatures would vaporize/destroy all conceived material vessels too quickly. I would like to hear someone talk about the limits of materials in this realm. So, for example what pressures would a 3 inch diameter ball of high grade steel surrounding a 1 mm cavity withstand? how about 6 feet diameter of surrounding steel? The material close to the cavity would definitely vaporize due to temperature but that does not mean the rest of the shell will if everything is done quickly. The thinking would be to increase the temperature and pressure of the fuel very rapidly before the material casing would be destroyed. This could be done electromagnetically maybe if steel were replaced with some other very strong material that is not a good conductor and the fuel is made to be conductive (think induction/eddy currents). Any thoughts on this subject are appreciated.