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Material Degradation in KS D 3503 SS400 Rolled Steel at $179^{\circ}C$  

Baek, Un-Bong (Safety Metrology Group, Korea Research Institute of Standards and Science)
Park, Jong-Seo (Safety Metrology Group, Korea Research Institute of Standards and Science)
Nahm, Seung-Hoon (Safety Metrology Group, Korea Research Institute of Standards and Science)
Publication Information
Journal of the Korean Society of Safety / v.21, no.4, 2006 , pp. 13-18 More about this Journal
Abstract
In spite of frequent defect in industrial boilers, life assessment or diagnostic method for them has not been actively studied. In this research, SS400 carbon steel used in industrial boilers is simulated with artificial aging heat treatment. To do qualitative life assessment, differences in micro-structures and hardness of SS400 by the degradation time are studied. In addition, variation in material properties by aging was observed with the tensile test at room temperature and $179^{\circ}C$ and changes in ductile to brittle transition temperature was observed with the charpy impact test performed at several test temperature.
Keywords
material degradation; KS D3503 SS400 steel; life assessment; ductile to brittle transition temperature; remaining life;
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