Susumu Katsuragi

Title: Susumu Katsuragi: Innovator in Heat-Resistant Cast Steel

Introduction

Susumu Katsuragi is a notable inventor based in Moka, Japan. He has made significant contributions to the field of materials science, particularly in the development of heat-resistant cast steel. With a total of 5 patents to his name, Katsuragi's work has had a profound impact on various industrial applications.

Latest Patents

Katsuragi's latest patents include innovative formulations of heat-resistant, austenitic cast steel. One of his patents describes a heat-resistant, austenitic cast steel that exhibits excellent thermal fatigue properties. This steel comprises by mass 0.3-0.6% of C, 0.5-3% of Si, 0.5-2% of Mn, 15-30% of Cr, 6-30% of Ni, 0.6-5% of Nb, 0.01-0.5% of N, and 0.01-0.5% of S, with a C/N ratio of 4-7. The balance consists of Fe and inevitable impurities. Additionally, the patent specifies a ratio A/B of a Cr-carbide-forming index A to a Nb-carbide-forming index B ranging from 0.6-1.7. Another patent focuses on a heat-resistant, austenitic cast steel with excellent machinability, comprising by mass 0.4-0.55% of C, 1-2% of Si, 0.5-1.5% of Mn, 18-27% of Cr, 8-22% of Ni, 1.5-2.5% of Nb, 0.01-0.3% of N, 0.1-0.2% of S, and 0.02-0.15% of Al. This formulation meets specific machinability index conditions.

Career Highlights

Throughout his career, Katsuragi has worked with prominent companies such as Hitachi Metals, Ltd. and Hino Motors, Ltd. His experience in these organizations has allowed him to refine his expertise in materials engineering and innovation.

Collaborations

Katsuragi has collaborated with notable colleagues, including Kana Morishita and Kenichi Inoue. These