RECENT TRENDS IN THE DEVELOPMENT OF OFFSHORE STEELS

Progress in metallurgy and a stricter computer-assisted control of the rolling process have been the basis for improvements in the quality of offshore steels. They offer a high resistance to lamellar tearing, which is mainly due to the treatment of the liquid steel with calcium compounds. Their cold cracking sensitivity, on the other hand, is much diminished because of the lower carbon and alloy content. The toughness of these steels is considerably higher than the toughness of conventional structural steels. Similar progress has been achieved with respect to the toughness of the HAZ of welds. Accelerated controlled cooled as well as quenched and tempered steels are an interesting alternative to the normalised steels preferably used up to now. They offer the opportunity to realise the large platforms required for deeper oil or gas fields, without increasing the weight of the platforms.

• Supplemental Notes:
  • ISOPE 91, 1st Intnl Offshore & Polar Engng Conference; 11-16 Aug 1991; Edinburgh, U.S. Sponsored by Intl Soc Offshore & Polar Engrs (ISOPE) et al. Procs. Publ by ISOPE, ISBN 0-9626104-61, Vol IV, p 190 [10 p, 18 ref, 2 tab, 13 fig]
• Authors:
  • Uwer, D
  • Degenkolbe, J
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Mechanical properties; Offshore structures; Steel
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00702910
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM