HEAVY DUTY BOLT OF STAINLESS STEEL FOR STRUCTURE FOR IMPROVING STRENGTH OF STRUCTURE BY INCREASING AMOUNT OF COMPONENTS

摘要

Purpose: the heavy bolt of one of the stainless steel for a structure is arranged to improve the intensity of structure by increasing a large amount of components and improving its manufacturing method. Construction: the heavy bolt of one of the stainless steel for a structure consists essentially of 0.05 to 0.10% C, 0.1 to 1.0% Si, 1.0 to 3.0% Mn, 0.03% or less P, 0,03% or less S, 1.0 to 4.0% copper, 8 to 16% Ni, 16to 22% Cr, 0.05 to 0.35% N, 0.05% or less Al, 0.001 to 0.005% Mg and 0.001 to 0.050% Ca. The heavy bolt of stainless steel for structure includes following one 0.03 to 0.30% V, 0.03 to 0.30% Ti, 0.03 Nb+Tb. Keeping component includes Fe and impurity.