FLARE JOINT FOR INTERIOR PIPING, MADE OF STAINLESS STEEL EXCELLENT IN CREVICE CORROSION RESISTANCE AND STRESS CORROSION CRACKING RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a flare joint for steel pipe joining, composed of a stainless steel stock, requiring no welding performance and excellent in crevice corrosion resistance and stress corrosion cracking resistance. ;SOLUTION: A stainless steel, which has a composition containing, by weight, ≤0.05% C, ≤4.0% Si, ≤2.0% Mn, ≤0.045% P, ≤0.005% S, 8-14% Ni, 17-12% Cr, ≤4.0% Cu, ≤0.2% N, 0.4-1.5% Mo, and ≤0.2% Al and in which the size of crystalline grains is regulated to 7-9 by grain size number defined by JIS-G0551, is used. The end of a steel pipe composed of the stainless steel is flanged to be formed into flanged structure.;COPYRIGHT: (C)1997,JPO