Joined body of dissimilar materials comprising steel...

Stock material or miscellaneous articles – All metal or with adjacent metals – Having marginal feature for indexing or weakened portion for...

Reexamination Certificate

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C428S653000, C428S681000, C219S136000, C219S13700R

Reexamination Certificate

active

07951465

ABSTRACT:
To provide a steel-aluminum welded material and a spot welding method therefor having high weld strength.The steel-aluminum welded material3includes a steel material1and an aluminum material2having predetermined widths. The area of a nugget5of a spot-welded part is determined as a function of the thickness of the aluminum material2, and the area of a part of the nugget5corresponding to a part having a thickness in a range between 0.5 and 10 μm of an interface reaction layer6is defined as a function of the thickness of the aluminum material2.

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Notificaton of Reasons for Refusal, Dispatch Date Dec. 14, 2010, Issued in JP 2003-396052, filed Nov. 26, 2003.
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