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溶接構造用圧延鋼板(SM400B)の材料特性

The material properties of a rolled steel for welded structure (SM400B)

青砥 紀身; 小峰 龍司; 加藤 章一

Aoto, Kazumi; not registered; not registered

本報告書は、「もんじゅ」2次系配管室の床ライナに用いられている材料である-溶接構造用圧延鋼板(旧規格名称SM41B 、現規格名称SM400B) の基本材料特性を調査し、材料試験等の検討結果に基づき- ナトリウム漏えい時の強度評価に必要な平均的な材料特性を暫定的に求めたものである。主な基本材料特性値は、以下の通りである。・ 0.2%耐力( 下降伏点)・ 引張強さ・ 縦弾性係数・ 静的応力- ひずみ関係(Ludwik 型式のおける物性値)・ クリープひずみ・ 線膨張係数・ 密度・ 比熱・ 熱伝導率

The basic material properties of a rolled steel for welded structure (present standard name is SM400B, old standard name SM41B) which is used as the liner plate in SHTS cells of "Monju plant". Based on the material testing data for evaluation of structural integity of the liner during sodium leakage are tentatively proposed. Main basic material properties are shown as follows. (1)The 0.2% offset yield stress (lower yield point). (2)The ultimate tensile strength. (3)The modulus of the longitudinal elasticity. (4)Static stress-strain relation. (Physical property in Ludwik equation). (5)The creep strain. (6)The linear thermal expansion coefficient. (7)The density. (8)A specific heat. (9)The thermal conductivity.

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