Spring steel and spring having superior corrosion fatigue strength
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United States of America Patent
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Jan 8, 2013
Grant Date -
Mar 31, 2011
app pub date -
Sep 28, 2010
filing date -
Sep 29, 2009
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Abstract
A spring steel and spring having superior corrosion fatigue strength and a strength on the order of HRC 53 to HRC 56 are disclosed. The spring steel comprises a tempered martensite and 2.1 to 2.4% Si in terms of percent by mass of the total mass of the spring steel.
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