HIGH TENSILE STRENGTH STEEL EXCELLENT IN HOT DIP GALVANIZING CRACKING RESISTANCE

Title:

HIGH TENSILE STRENGTH STEEL EXCELLENT IN HOT DIP GALVANIZING CRACKING RESISTANCE

Document Type and Number:

Japanese Patent JPH1096060

Kind Code:

A

Abstract:

To produce a steel having high strength and free from the generation of galvanizing crackings in the weld zone.

This steel is the one to be subjected to reheating quenching after rolling and having a compsn. contg., by weight, 0.04% to 0.08% C, 0.1 to 0.6% Si, 0.8 to 1.6% Mn, ≤0.02% P, ≤0.002% S, 0.8 to 1.8% Cu, 0.4 to 1.0% Ni, 0.01 to 0.20% V, 0.01 to 0.05% Ti, 0.001 to 0.005% Ca, 0.002 to 0.006% N, 0.005 to 0.1% Al, ≤0.0002% B and ≤0.005% O, furthermore added with one or ≥ two kinds among ≤0.5% Cr, ≤0.4% Mo and ≤0.03% Nb, and the balance iron with impurities.

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Inventors:

WADA NORIKI
KOJIMA TOSHIFUMI
ARAKAWA TAKEKAZU
YAMAMOTO SADAHIRO
YOKOYAMA HIROYASU

Application Number:

JP25206796A

Publication Date:

April 14, 1998

Filing Date:

September 24, 1996

Export Citation:

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Assignee:

NIPPON KOKAN KK

International Classes:

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

Attorney, Agent or Firm:

Takehiko Suzue (4 outside)

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