Steel for the transport and storage of liquid ammonia
AssigneeGas and Heat S.P.A.
InventorsMauro EVANGELISTI, Marco DI NICOLA
Life of this patent
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Abstract
A steel is for making containers, such as for reservoirs or tanks for the storage and transport of liquid ammonia.
Claims14
An austenitic stainless steel for making a container adapted for storage or transport of liquid ammonia, the austenitic steel comprising, by weight percentage, from 15.5 to 17.5% of chromium (Cr), from 6.0 to 8.0% of manganese (Mn), from 3.5 to 5.5% of nickel (Ni), from 0.10 to 0.25% of nitrogen (N), from 0.001 to 0.05% of carbon (C), and from 66.0 to 75.0 of iron (Fe).
A container for storage or transport of liquid ammonia comprising a main body made with an austenitic stainless steel comprising, by weight percentage, from 15.5 to 17.5% of chromium (Cr), from 6.0 to 8.0% of manganese (Mn), from 3.5 to 5.5% of nickel (Ni), from 0.10 to 0.25% of nitrogen (N), from 0.001 to 0.05% of carbon (C), and from 66.0 to 75.0 of iron (Fe);
- wherein said main body comprises at least one joint made with a filler material comprising, by weight percentage, from 15 to 25% of chromium (Cr), from 2 to 4% of molybdenum (Mo), from 14 to 18% of nickel (Ni), from 6 to 8% of manganese (Mn), from 0.13 to 0.20% of nitrogen (N), and from 0.01 to 0.04% of carbon (C).
(canceled)
Dependencies are inferred from the claim text.