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Spring steel, useful in components of vehicle suspension systems e.g. leaf springs, torsion bar springs and/or stabilizer bars, comprises carbon, silicon, manganese, chromium, and an element comprising nickel, molybdenum or vanadium
Spring steel, useful in components of vehicle suspension systems e.g. leaf springs, torsion bar springs and/or stabilizer bars, comprises carbon, silicon, manganese, chromium, and an element comprising nickel, molybdenum or vanadium
Spring steel (I) comprises: 0.35-0.55 wt.% of carbon (C); 1.60-3 wt.% of silicon (Si); 0.20-1.50 wt.% of manganese (Mn); 0.10-1.50 wt.% of chromium (Cr); and at least one element comprising 0.40-3 wt.% of nickel (Ni), 0.05-0.50 wt.% of molybdenum (Mo), or 0.05-0.50 wt.% of vanadium (V), where the balance amount includes iron (Fe) and existing elements and impurities, and the following formulae (1) and (2) are satisfied: 0.400% = C(%)+Mn(%)/6+Si(%)124+Ni(%)/40+Cr(%)/5+Mo(%)/4+V(%)/14 = 0.800% (1) and 0.540% = C(%)+Mn(%)/6+Si(%)/25 = 0.670% (2).
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