SHAPE STEEL EXCELLENT IN BRITTLE FRACTURE RESISTANCE UNDER HIGH SPEED DEFORMATION

Title:

SHAPE STEEL EXCELLENT IN BRITTLE FRACTURE RESISTANCE UNDER HIGH SPEED DEFORMATION

Document Type and Number:

Japanese Patent JPH10195592

Kind Code:

A

Abstract:

To provide a shape steel for structural purpose excellent in brittle fracture resistance even under high speed deformation caused by active fault type big earthquakes, the collision of vessels or the like.

This shape steel is the one having a flange, a web or a flange and a fillet part as the joint part therebetween and having a compsn. contg., by weight, 0.05 to 0.2% C, 0.05 to 0.5% Si, 0.5 to 1.8% Mn, 0.001 to 0.06% Al, ≤0.005% S, ≤0.003% O, and the balance Fe with inevitable impurities. In a tension test using a test piece having a notch by which the stress concn. factor in the fillet part of the shape steel is ≥5, it has ≥30% value of reduction of area under static loading conditions.

Inventors:

YAMAMOTO SADAHIRO
YOKOYAMA HIROYASU
ISHIKAWA NOBUYUKI

Application Number:

JP146197A

Publication Date:

July 28, 1998

Filing Date:

January 08, 1997

Export Citation:

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Assignee:

NIPPON KOKAN KK

International Classes:

C22C38/00; C22C38/06; C22C38/58; (IPC1-7): C22C38/00; C22C38/06; C22C38/58

Attorney, Agent or Firm:

Takehiko Suzue (4 outside)

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