Zinc-base galvanized sheet steel excellent in press-formability,

Details Zinc-base galvanized sheet steel excellent in press-formability, Zinc-base galvanized sheet steel excellent in press-formability,

1993-08-19

1996-06-11

Straub, Gary P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428659, 428632, 428633, 428658, 428610, 148263, 148258, 148262, 205141, 205155, 205188, B32B 1504, C23C 2258, C25D 908

Patent

active

055254314

ABSTRACT:
A zinc-base galvanized sheet steel which comprises zinc-base plated sheet steel and, formed on the plating layer surface, an inorganic covering layer which contains at least one inorganic oxide in an amount of 1-500 mg/m.sup.2 in terms of the weight of metallic elements exclusive of oxygen and optionally contains at least one oxoacid or inorganic oxide colloid in an amount of 1-500 mg/m.sup.2 and further, as desired for improving weldability, a Zn oxide film formed between the inorganic covering layer and the zinc-base plating layer, and the process for producing said galvanized sheet steel.

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