Canadian HSLA Steel Pipelines: History and Technology Developments




Abstract: Pipeline failures can be severe events that impact both society and industry. The oil spills in North Battleford, Saskatchewan in 2016 and the gas rupture in Beardmore, Ontario in 2011 are examples of recent pipeline failures in Canada. Pipeline failures have led to pipe fabricators developing new precursor steels and manufacturing processes to improve the final product properties. This paper is aimed at summarizing historically the advancements made in manufacturing of steels used for pipelines. High strength low alloy (HSLA) steels are used extensively to manufacture these pipelines. After the introduction of the first generation of HSLA steels, i.e., X42 in 1948, various classes of HSLA steels, such as X52 and X60, were developed to improve the mechanical properties. In 1970, X70 and X80 HSLA steels were developed to further improve the properties and to improve weldability. Even higher strength grades, such as X100 and X120, have been introduced in recent years.

Authors: Mohsen Mohammadijoo, Laurie Collins, Hani Henein, and Douglas G. Ivey

Keywords: HSLA Steel, Pipeline, TMCP , Microstructure, Mechanical Properties

Additional information

Page Count

8 pages


PDF Download