SIMPLE MEASUREMENT METHOD OF PERMEABILITY OF NONMAGNETIC AUSTENITE STAINLESS STEEL

摘要

PURPOSE: A simple measurement method of a permeability of a nonmagnetic austenite stainless steel is provided, which reduces the number of workers by measuring the permeability within a short time without destroying a sample. CONSTITUTION: According to the method for measuring a permeability of a nonmagnetic austenite stainless steel using a content of delta-ferrite, a regression equation of the permeability(permeability=1.02581+0.05076xdelta-content of ferrite) and a graph diagram are made using a linear regression equation analysis function through an arithmetic calculation program, after measuring the delta-ferrite content and the permeability at the same time in a back plate of the austenite stainless steel. Then, the permeability of the stainless steel is predicted from a content of the delta-ferrite by referring to a correlation coefficient(R=0.93) obtained from the regression equation of the permeability.