SF-3 vessels are allowed, subject to extensive certification and testing. Complex vessels may require outside help. Pressure calculation disk is available upon request 1. Must establish mechanical integrity for primary vessel. Must establish mechanical integrity for shielding or barricade.
Solubility increases with temperature and pressure.
Is magnetic, will embrittle as maraging steel. Careful control of carbon, nitrogen and nickel content will stabilize the austenite structure, increase resistance to hydrogen. To enhance austenitic stability in 316 SST, the tolerance of key elements in the alloy's chemistry can be reduced. Controlled foundry practice allows more exact chemistry. At high strength heat treat conditions.