特許不銹鋼に就て

概要

論文の詳細を見る
The physical, mecbanical and welding properties of a proprietery stainless steel of the following composition were studied : C⦤0.25 ; Si 0.1-2.0 ; Cu 0.05-4.5 ; Ni 1-7 ; Cr 16-30 ; W 0.2-8.0%. One or more of the following optional element may be present : V⦤1.0 ; Co⦤1.0 ; Al⦤1.0 ; Ti⦤1.0%. In the experiment, the steels were divided into the four groups : martensitic, ferritic, austenitic and austeno-ferritic, according with the different proportions of Ni and Cr within the patented range and to each of which 1-8% W was added. From the result of the experiment it was concluded that, besides its high strength and at elevated and room temperatures, it has excellent corrosion resistance to dilute sulphuric, hydrochloric, sulphurous, nitric, phosphoric, oxalic, tartaric, acetic and formic acids. Steels containing 18% Cr, 7% Ni and 5-8% W may be favorably used for handling such solution as ferric chloride or sea water plus hydrogen peroxide, which will cause pitting. As for the resistance to intergranular corrosion, the addition of W alone is not so efficient as that of Ti or Cr, but rather Si or Ti should be accompanied for this purpose.
社団法人日本鉄鋼協会の論文
1940-11-25