BASE MATERIAL FOR HIGH-TOUGHNESS CLAD STEEL PLATE AND METHOD OF PRODUCING THE CLAD STEEL PLATE
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United States of America Patent
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Issued Date -
Jun 11, 2015
app pub date -
May 22, 2013
filing date -
May 23, 2012
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Abandoned
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Abstract
A base metal for a high-toughness clad plate has a shear area of 85% or more in a −20° C. DWTT test and includes, in terms of % by mass, C: 0.030% to 0.10%, Si: 0.10% to 0.30%, Mn: 1.30% to 1.80%, P: 0.015% or less, S: 0.003% or less, Mo: 0.05% to 0.50%, V: less than 0.010%, Nb: 0.010% to 0.060%, Ti: 0.005% to 0.020%, Al: 0.040% or less, Ca: 0.0010% to 0.0040%, N: 0.0030% to 0.0060%, and the balance being Fe and unavoidable impurities.
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