Fluorescent X-Ray Analysis of Iron and Steel - Errors and Limits of Determination

Abstract

The application of the fluorescent X-ray analysis of iron and steel for the efficient daily work to more kinds of impurity element and to a wider range of each amount than usual was studied. The calibration curves of 21 alloying and residual elements (Si,P,S,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,As,Zr,Nb,Mo,Ag,Sn,Sb,Ta,W,Pb) were made out for 61 NBS and BS standard samples of cast iron, white iron, carbon steel, low alloy steel, stainless steel, tool steel and high temperature iron alloys. The results showed that each element could be determined with the error of less than 10% when the concentration was more than 0.001%. The influence of the coexisting elements on the determination of one element was discussed.