High-strength austenitic stainless steel with excellent hot workability

Abstract

Disclosed is a high-strength austenitic stainless steel having excellent hot workability. The high-strength austenitic stainless steel having excellent hot workability according to the present disclosure includes, in percent by weight (wt %), 0.01 to 0.035% of C, 0.5% or less of Si, 0.5 to 1.5% of Mn, 17 to 22% of Cr, 6 to 11% of Ni, 1% or less of Mo, 1% or less of Cu, 0.1 to 0.22% of N, and the balance of Fe and inevitable impurities, wherein a value of Formula (1) below 1.9 or more, or a precipitation temperature of chromium nitride satisfies a value represented by Formula (2) below or less. 3×(Cr+Mo)+5×Si−2×Ni−Mn−70×(C+N)−27  (1) 1180+36×C+12×Mo+17×Cu+411×N−35×Mn  (2)

Dependencies are inferred from the claim text.