X-70. Mo--Nb: a new family of HSLA steels designed for Arctic and offshore pipelines

Book ·

OSTI ID:7345559

Boussel, M P; Miyano, K; Straatmann, J A

High-quality steels are needed for pipelines in remote and hostile environments. A family of new formula HSLA steels is produced with the aid of up-to-date mill processing technology, with a resulting combination of greater yield strength and better impact properties owing to grain refinement. Effects of Mo content, cold forming, tempering, and pipe geometry on mechanical properties are shown. Fracture toughness was studied for several steels. Case histories of gas transmission pipes made from 5LS-X65, 5LS-X70, 5LX-X70, and 5LX-X65 are given. Welding of Mo--Nb line pipe in mill and field is discussed, with an evaluation of girth welds. 9 tables, 17 figs. (DLC)

• OSTI ID: 7345559
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000 -- Petroleum-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
FABRICATION
FRACTURE PROPERTIES
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
LOW TEMPERATURE
MATERIALS
MECHANICAL PROPERTIES
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
PIPELINES
STEELS
WELDED JOINTS
WELDING