CarTech Micro-Melt NeutroSorb PLUS alloys are similar to conventional Type 304 stainless except that they contain a boron addition which imparts a much higher thermal neutron absorption cross section than other austenitic stainless steels. CarTech Micro-Melt NeutroSorb PLUS alloys are available with boron levels up to 2.25% as specified by customer requirements.

Increasing boron content increases the thermal neutron absorption capability of the alloys. Increasing boron content also increases hardness, tensile strength and yield strength, but decreased tensile ductility, impact toughness and corrosion resistance.

Through controlled special processing, CarTech Micro-Melt NeutroSorb PLUS alloys, ASTM A887-89 Grade "A" Alloys, suffer less decrease in ductility and impact toughness as boron content increases when compared to ASTM A887-89 Grade "B" alloys.

Applications:
These alloys have been used in the nuclear industry for spent fuel storage racks and cask baskets, control rods, burnable poison, and shielding.