HIGH STRENGTH, AIR-HARDENING STEEL WITH EXCELLENT SHAPING PROPERTIES
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United States of America Patent
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Issued Date -
Jul 9, 2009
app pub date -
Nov 3, 2005
filing date -
Nov 3, 2004
priority date (Note) -
Abandoned
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Abstract
The invention relates to a high strength, air-hardening, temper-resistant steel, which can easily be welded and galvanized and exhibits excellent shaping properties, particularly for the construction of lightweight vehicles. The inventive steel comprises the following elements (contents in mass %): C0.07 to ≦0.15, Al≦0.05, Si 0.15 to ≦0.30, Mn 1.60 to ≦2.10, P≦0.020, S≦0.010, N 0.0030 to ≦0.0150, Cr 0.50 to ≦1.0, Mo 0.30 to ≦0.60, Ti 0.010 to ≦0.050, V 0.12 to ≦0.20, B 0.0015 to ≦0.0040, remainder iron including incidental steel-accompanying elements.
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