Patent ID: 8865471

Claim:
A method for analyzing Ti in precipitates and inclusions including a Ti compound in a Ti-containing steel material, comprising: an electrolysis step of partially electrolyzing a Ti-containing steel sample in an electrolytic solution, whereby precipitates and inclusions including a Ti compound attach to a remaining portion of the steel sample; an immersion step of immersing a remaining portion of the steel sample taken out of the electrolytic solution with the precipitates and inclusions attached thereto in a dispersing solution; a fractionation step of filtering precipitates and/or inclusions including a Ti compound separated in the dispersing solution using filters having straight pores and a porosity of 4% or more once or more, wherein the straight pores extend through the filters; and an analysis step of analyzing one or more of the precipitates and the inclusions trapped on one or more of the filters and the precipitates and the inclusions passing through one or more of the filters.