Abstract
The heat resisting steel is hitherto widely used in mechnical and chemical industries, being chiefly applied too internal ctombusinn engines. Picking up thirteen different kinds of heat resisting steels, the writers first examined their mechanical properties at room and high temperature, and brittleness due to heating in high temperature, and then tested the resistance to oxidation in high temperature.
As the resalts of this investigation., it was found that the steel containing high nickel and chromium content are naperier to other steels and high manganese-chromium steel containing a little vanadium or nitrogen are used as a substitution to high nickel-chromium steel for atemperature of or nea 800°, and high chromium steel containing silicon are most proper for use as an inlet valve of internal combusion engine.
