Our full range of CRYO-NETIC® materials are ideal for shielding unwanted magnetic fields at extremely low temperatures, typically 77 Kelvin (liquid nitrogen) and 4 Kelvin (liquid helium). Our sheet is soft tempered to allow fabrication, and requires a scientifically developed, critical annealing cycle after fabrication. Our foil is fully annealed for use in cryogenic applications and is ideal for thermal contraction (expansion) joints, spacers and shims.