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Title:
MANUFACTURE OF HIGHLY CORROSION RESISTANT CLAD STEEL PLATE EXCELLENT IN DEEP DRAWING AND INTERFACIAL FRACTURE RESISTANCE IN WORKING
Document Type and Number:
Japanese Patent JPH06320253
Kind Code:
A
Abstract:

PURPOSE: To provide soft stainless steel clad plate having high workability and high corrosion resistance.

CONSTITUTION: The surface layer steel has the composition consisting of, by weight, ≤0.0800% C, 3.0-25.0% Cr, and ≤0.0800% N, and the inner layer steel has the composition consisting of ≤0.0040% C, ≤0.02% N, ≤0.3% Al, $1.0% Si, and ≤0.05% P, and the amount of Cr of the inner layer and the surface layer is determined to meet the inequality 0.20% (Cr of the inner layer/Cr of the surface layer) ≥0.01. The double-layered structure is provided by the pouring method, and the ratio of the surface layer to the full thickness is set to 2-20% on one side, and 4-40% on both sides, and at the same time, the transition layer of the surface and inner layers whose ratio to the full thickness is 0.1-10% on one side, and 0.2-20% on both sides is formed. In addition, the annealing temperature after hot rolling or cold rolling is set to ≥720°C to ≤900°C.


Inventors:
MURAKAMI HIDEKUNI
SENUMA TAKEHIDE
Application Number:
JP13240293A
Publication Date:
November 22, 1994
Filing Date:
May 12, 1993
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B22D19/16; B32B15/18; C21D8/04; C21D9/48; C22C38/00; (IPC1-7): B22D19/16; B32B15/18; C21D8/04; C21D9/48; C22C38/00
Attorney, Agent or Firm:
Masamitsu Akizawa (1 person outside)



 
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