Spring steel and spring having superior corrosion fatigue strength
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United States of America Patent
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Jul 29, 2014
Grant Date -
Mar 31, 2011
app pub date -
Sep 28, 2010
filing date -
Sep 29, 2009
priority date (Note) -
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Abstract
A high-strength spring steel and a spring are provided that have superior corrosion fatigue strength. The spring steel comprises, in mass percent, 0.35-0.55% C, 1.60-3.00% Si, 0.20-1.50% Mn, 0.10-1.50% Cr, and at least one of 0.40-3.00% Ni, 0.05-0.50% Mo and 0.05-0.50% V, the balance being substantially Fe and incidental elements and impurities.
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