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

Claim 5:
6. The drive shaft according to claim 1, wherein the medium carbon steel serving as the material of the hollow tubular body contains, by weight, 0.43 to 0.47% C, 0.30% or less Si, 0.60 to 0.90% Mn, 0.010% or less P, 0.020% or less S, 0.1% or less Cu, 0.1% or less Ni, 0.05% or less Cr, and 0.02 to 0.04% Al; rest of the medium carbon steel consists of Fe and unavoidable impurities; and grain size number ranges from #5 to #9.