Wrought stainless steel compositions having engineered...

Metal treatment – Stock – Ferrous

Reexamination Certificate

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C148S326000

Reexamination Certificate

active

10397582

ABSTRACT:
A wrought stainless steel alloy composition includes 12% to 25% Cr, 8% to 25% Ni, 0.05% to 1% Nb, 0.05% to 10% Mn, 0.02% to 0.15% C, 0.02% to 0.5% N, with the balance iron, the composition having the capability of developing an engineered microstructure at a temperature above 550° C. The engineered microstructure includes an austenite matrix having therein a dispersion of intragranular NbC precipitates in a concentration in the range of 1010to 1017precipitates per cm3.

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