The design of steel for high strength line pipe requiring excellent notch toughness and corrosion properties for arctic applications
- Prudential Steel Ltd., Calgary, Alberta (Canada)
- Dofasco Inc., Hamilton, Ontario (Canada)
Due to the cold climate and environmental requirements of Alaska`s North Slope and Western Canada`s oil production areas, line pipe steels intended for use in these areas must display not only high strength as required, but superior toughness. Additionally,if the line pipe is to be used in aggressive sour gas (i.e., H{sub 2}S containing) environments it must also have excellent resistance to hydrogen induced cracking (HIC). Such a steel has been designed, through selective chemistry, clean steel-making practices, nonmetallic inclusion control, and hot mill process control, that is capable of meeting stringent line pipe specifications covering X65 grade line pipe in Arctic service temperatures. This paper also examined the effect that hot rolling finishing temperature had on notch toughness. Steel-making knowledge developed for lower strength, HIC resistant X52 grade steel has been employed for the development of a X65 grade steel. Results of trial heats will be presented.
- OSTI ID:
- 351745
- Report Number(s):
- CONF-980316-; TRN: IM9927%%270
- Resource Relation:
- Conference: Corrosion `98, San Diego, CA (United States), 22-27 Mar 1998; Other Information: PBD: 1998; Related Information: Is Part Of Corrosion `98: 53. annual conference and exposition, proceedings; PB: [6600] p.
- Country of Publication:
- United States
- Language:
- English
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