PLATE
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United States of America Patent
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Issued Date -
Apr 8, 2010
app pub date -
Dec 13, 2007
filing date -
Dec 14, 2006
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a plate of a plate heat exchanger, said plate comprising a material which constitutes a part of said plate with a surface made of this material positioned to be in direct contact with a chloride-containing cooling liquid, such as sea water, in which the material is a duplex stainless steel alloy containing in weight-%: C max 0.06%, Si max 1.5%, Mn 0-3.0%, Cr 23.0-32.0%, Ni 4.9-10.0%, Mo 3.0-8.0%, N 0.15-0.5%, B 0.-0.010%, S max 0.030%, Co 0-3.5%, W 0-3.0%, Cu 0-2.0%, Ru 0-0.3%, Al 0-0.2%, Ca 0-0.010% balance Fe and normal occurring impurities, wherein the ferrite content is 35-70 volume-%.
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