Patent ID: 11965548
Assignee: HONDA MOTOR CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC F  B  C | IPC B  F

Claim 4:
5. The drive shaft according to claim 1, wherein the medium carbon steel serving as a material of the solid stub shaft contains, by weight, 0.45 to 0.51% C, 0.20% or less Si, 0.30 to 0.50% Mn, 0.010% or less P, 0.008 to 0.020% S, 0.1% or less Cu, 0.1% or less Ni, 0.1 to 0.2% Cr, at least one of 0.05 to 0.25% Mo, 0.03 to 0.08% Nb, and 0.01 to 0.05% Ti, 0.02 to 0.04% Al, and 10 to 30 ppm B; rest of the medium carbon steel consists of Fe and unavoidable impurities; and grain size number ranges from #9 to #11.