REFERENCE SUBSTANCE FOR QUANTITATIVE ANALYSIS OF ALLOY ELEMENT IN STEEL MATERIAL AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a reference substance to be used for quantitative analysis of an ultra-trace alloy element or impurity content of a 10 mass ppm level in a steel material by using a physical analytical instrument having spatial resolution of 1 μm or less.SOLUTION: The reference substance is used for quantitative analysis of an ultra-trace analysis target element in the steel material by using the physical analytical instrument for performing ultra-trace element analysis in a diameter area of 0.01 to 1 μm. The reference substance is polycrystalline iron-base alloy containing predetermined mass % of the analysis target element and containing any one sort of Al: 1-10%, Si: 2-13% and Ni: 30-49%, in which the residual is composed of Fe and inevitable impurity and an average crystal grain diameter is 1 to 100 mm.