Steel for wheel

Abstract

A steel for wheel contains, in mass %, C: 0.65 to 0.84%, Si: 0.4 to 1.0%, Mn: 0.50 to 1.40%, Cr: 0.02 to 0.13%, S: 0.04% or less and V: 0.02 to 0.12%, wherein Fn1 expressed by formula (1) is 32 to 43, and Fn2 expressed by formula (2) is 25 or less, the balance being Fe and impurities. P, Cu and Ni as impurities are P: 0.05% or less, Cu: 0.20% or less and Ni: 0.20% or less: Fn1=2.7+29.5·C+2.9·Si+6.9·Mn+10.8·Cr+30.3·Mo+44.3·V  (1) Fn2=exp(0.76)·exp(0.05·exp(1.35·Si)·exp(0.38·Mn)·exp(0.77·Cr)·exp(3.0·Mo)·exp(4.6·V)  (2). The steel has excellent properties for use as a wheel.

Dependencies are inferred from the claim text.