HOT PRESS-FORMED PRODUCT, PROCESS FOR PRODUCING SAME, AND THIN STEEL SHEET FOR HOT PRESS FORMING
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United States of America Patent
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Issued Date -
Feb 27, 2014
app pub date -
Jun 8, 2012
filing date -
Jun 10, 2011
priority date (Note) -
Abandoned
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Abstract
There is provided a hot press-formed product, including a steel sheet formed by a hot press-forming method, and having a metallic structure that contains ferrite at 30% to 80% by area, bainitic ferrite at lower than 30% by area (not including 0% by area), martensite at 30% by area or lower (not including 0% by area), and retained austenite at 3% to 20% by area, whereby balance between strength and elongation can be controlled in a proper range and high ductility can be achieved.
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