Metallurgically bonded stainless steel

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United States of America Patent

PATENT NO 8557397
APP PUB NO 20130171471A1
SERIAL NO

13629699

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Abstract

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A steel form having a stainless steel exterior; the steel form includes a core region that comprises at least 55 wt. % iron which is metallurgically bonded to a stainless steel coating that consists of a stainless steel region and a bonding region. The stainless steel region can have a thickness of about 1 μm to about 250 μm, and a stainless steel composition that is approximately consistent across the thickness of the stainless steel region. The stainless steel composition includes an admixture of iron and about 10 wt. % to about 30 wt. % chromium. The bonding region is positioned between the stainless steel region and the core region, has a thickness that is greater than 1 μm and less than the thickness of the stainless steel region, and has a bonding composition. The bonding composition includes an admixture of iron and chromium, with a chromium concentration proximal to the stainless steel region that is approximately equal to the chromium concentration of the stainless steel region and has a chromium concentration proximal to the core region that has less than about 5 wt. % chromium.

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Patent Owner(s)

Patent OwnerAddress
PUBLIC JOINT STOCK COMPANY "SEVERSTAL"30 MIRA STREET CHEREPOVETS VOLOGDA REGION RU-162608

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bullard, Daniel E Valparaiso, US 15 87
McDermott, Joseph E Chicago, US 14 80

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