Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
MODERN TRENDS IN THE IRON AND STEEL STANDARD SPECIFICATION IN JAPAN
Hiroshi Yoshimura
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1955 Volume 41 Issue 7 Pages 803-812

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Abstract

The enterprise of Goverment engineering normalization started by the hand of the Research Committe for Engineering Products Specification Unification (Kogyohin-Kikaku-Toitsu Chosakai)in 1921, when the specification of the metallic tensile specimen was marked as No.1 of Japanese Engineering Standard(JES). In 1939, when the Chino-Japanese Incident was prospected to be long-lasting, another group of Provisional JES specifications were established to meet the quasi-war or war-time demands. At the time of defeat(Aug.1945), there were present 520 JES and 933 provisinal JES specifications.
In 1949, the old Committee since 1921 was abolished and an Engineering Standard Research Committee(Kogyo-Hyojun-Chosakai) was instituted. Here new specifications(New JES) under 20 divisions were to be determined. The iron and steel specifications belonged to the division of Japanese Metal Standard (chairman Dr. Kuniichi Tawara), which was again subdivided into several subdivisions. The conversion from the old to new standard were successively performed in this Division.
However, to overcome all out-of-date traditions and to realize a scientific rationalization, the 5 th Session of Japanese Parliament in 1949 decided to pass an Industrial Standardization Law (Kogyo-Hyojunka-ho). To promote this standardization Japanese Industrial Standard Research Committee (Nihon Kogyo-Hyojun-Chosakai) was instituted, that belonged to 10 Ministries including Ministry of International Trade and Industry (MITI). At the top of this organization was situated a Standard Council (Hyojun-Kaigi), under which there were several divisions under which again respective technical committees should be organized for discussion of each (JIS) specifications. To all discussions in these organizations equitably participated opinions of manufactacturers, users, sellers and neutral scientists. In the Metal Divisions, Dr. Tokushichi Mishima was appointed chairman. In March 1954 all necessary transference from the old to the new iron and steel specifications had been completed. In February 1955, the number of specifications in the iron and steel division amounted to 138.
On the other hand,. in view of encouraging the specified products and protecting the, bona fide manufacturers, the Industrial Standardization Law instituted a system of JIS marking for the qualified products.
After the aforementioned historical introduction the author descibed in detail the postwar progress of iron and steel JIS specifications in fields of raw meterials, rolled steel products by different shapes, chemical compostions, steel casting and various methods of testing.

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© The Iron and Steel Institute of Japan
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