January 2011 Vol. 238 No. 1

Features

Part 2: Low Temperature Ductility And Ductile Crack Arrest Properties Of High Strength Low Alloy Steel

We stated in Part 1 of this two-part series that one of the most critical decisions in pipeline design is the quality of steel. We also discussed the importance of steel quality in terms of the quality of pipe. Pipe, after all, is a dimensional aspect of material and, for this discussion, the material is steel. The discussion on steel making especially focused on low-temperature ductility and steel’s ability to resist initiation and arrest of ductile cracks. In Part 2 we take this concept a step further and marry the importance of steel quality in the design of pipelines and facilities. We move to design by stating that the determination of the quality of steel suitable fo