한국안전학회지 (Journal of the Korean Society of Safety)
- 제16권4호
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- Pages.39-46
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- 2001
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- 1738-3803(pISSN)
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- 2383-9953(eISSN)
도시가스용 D3507 및 D3631 강관의 파괴특성
Fracture Characteristics of D 3507 and D 3631 City Gas Steel Pipes
초록
It is noted that KS D 3507 pipe steel has several problems when it is used as a city gas pipe at medium pressure. So new pipe steel, KS D 3631, was developed in order to be used as a pipe for medium and low pressure and now it is being substituted for D 3507. In this study, several mechanical tests, such as tensile test, microhardness test, and Charpy impact test were conducted to get material properties of D 3507 and D 3631 pipe steels. And also microstructures at the weld and heat affected zones were observed for the two materials. From the Charpy test results