航空機用プロペラ・ハブ用材の研究

抄録

The mechanical tests were made on the approriate properties required for the material for propeller hubs relating to the following five kinds of steel, viz.,
chrome-molybdenum steel (C 0·3%, Cr 1·2%, Mo 0·5%),
chrome-vanadium steel (C 0·3%, Cr 1·0%, V 0·1%),
nickel-chromium steel (C 0·3%, Ni 4·5% Cr 0·5%),
nickel-chrome-molybdenum steel (C 0·3%, Ni 3·0%, Cr 1·2%, Mo 0·4%), and
nickel-chrome-molybdenum steel (C 0·45%, Ni 17%, Cr 0·8%, Mo 0·2%).
The tests were particularly made on the last named steel which appears not so widely used as the other kinds of material for the purpose.
The results show that this steel is of the excllent quality as a material for the manufacture of the hubs in view of its strength and economy.