Title:
HOT DIP GALVANIZED STEEL SHEET HAVING HIGH STRENGTH AND HIGH DUCTILITY AND EXCELLENT IN ADHESIVE STRENGTH OF PLATING
Document Type and Number:
Japanese Patent JP2738209
Kind Code:
B2
Abstract:
PURPOSE: To improve the adhesive strength of plating without deteriorating the superior balance between strength and ductility, which is the feature of a complex structure steel sheet containing residual austenite, by specifying respective contents of C, Mn, Si, Al, etc., in the composition of a steel sheet.
CONSTITUTION: The steel sheet for hot dipping has a composition consisting of, by weight, 0.05-0.30% C, ≤0.5% Si, 0.8-3.0% Mn, ≤0.02% P, ≤0.01% S, 0.5-1.5% Al, ≤0.008% N, and the balance Fe with inevitable impurities and further containing, as necessary, one or ≥2 kinds selected from 0.005-0.05% Ti, 0.005-0.05% Nb, 0.0005-0.003% B, 0.2-1.0% Cu, 0.2-1.0% Ni, 0.2-1.0% Cr, and 0.2-1.0% Mo. A cold rolled steel sheet of this composition, passes through a continuous hot dip galvanizing line and subjected to annealing and to the formation of a galvanized layer.
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Inventors:
TSUNODA HIROYUKI
TSUYAMA AOSHI
HOSOYA YOSHIHIRO
INAGAKI JUNICHI
TSUYAMA AOSHI
HOSOYA YOSHIHIRO
INAGAKI JUNICHI
Application Number:
JP8043792A
Publication Date:
April 08, 1998
Filing Date:
March 02, 1992
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
C22C38/00; C22C38/06; C23C2/06; C23C2/40; (IPC1-7): C22C38/00; C22C38/06; C23C2/06; C23C2/40
Domestic Patent References:
| JP5125485A | ||||
| JP4318150A | ||||
| JP61199054A |
Attorney, Agent or Firm:
Ichiichi Shirakawa