STAINLESS SEAMLESS STEEL PIPE AND METHOD FOR PRODUCING STAINLESS SEAMLESS STEEL PIPE

Provided herein is a stainless steel seamless pipe. A stainless steel seamless pipe of the present invention has a composition that contains, in mass%, C: 0.06% or less, Si: 1.0% or less, Mn: 0.01% or more and 1.0% or less, P: 0.05% or less, S: 0.005% or less, Cr: 15.2% or more and 18.5% or less, Mo: 1.5% or more and 4.3% or less, Cu: 1.1% or more and 3.5% or less, Ni: 3.0% or more and 6.5% or less, Al: 0.10% or less, N: 0.10% or less, O: 0.010% or less, and Sb: 0.001% or more and 1.000% or less, and in which C, Si, Mn, Cr, Ni, Mo, Cu, and N satisfy the predetermined formula, and the balance is Fe and incidental impurities,the stainless steel seamless pipe having a microstructure containing 30% or more martensitic phase, 65% or less ferrite phase, and 40% or less retained austenite phase by volume,the stainless steel seamless pipe having a yield strength of 758 MPa or more.