Low temperature type new TMCP steel plate for LPG carriers

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:433670

Suzuki, Shuichi; Bessyo, Kiyoshi; Arimochi, Kazushige; Yajima, Hiroshi; Tada, Masuo; Sakai, Daisuke

New Thermo-Mechanical Control Process (TMCP) steel plate for LPG carriers of completely liquefied type was developed with non-nickel chemistry. The new steel plate has a capability to arrest a long running brittle crack at {minus}46 C (which is the design temperature of the liquefied LPG tanks). A high heat-input one-pass welding can be applied to this steel despite its nickel-less chemistry. These capabilities were enabled by microalloying technology with low aluminum-medium nitrogen-boron, as well as by the advanced Thermo-Mechanical Control Process. This paper describes the new concept of utilizing the trace elements and the evaluation test results as the steel plate for the LPG tank and hull, especially from the standpoints of the fracture safe reliability at high heat input welding and from that of the shop workability.

• OSTI ID: 433670
• Report Number(s): CONF-940409--; ISBN 1-880653-10-9
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
36 MATERIALS SCIENCE
42 ENGINEERING
FRACTURE PROPERTIES
LIQUEFIED NATURAL GAS
MARITIME TRANSPORT
MATERIALS
MATERIALS TESTING
METALLURGICAL EFFECTS
PLATES
STEELS
TANKER SHIPS
THERMAL FATIGUE
THERMAL INSULATION
WELDABILITY
WELDED JOINTS