Patent ID: 8186696
Filing Date: 2012-05-29
Classification: B60G,B62D,C21D

Abstract:
1. A steel tie rod end, comprising: a shaft portion; a first fitting portion that is continuous with a first end portion of the shaft portion in a longitudinal direction of the shaft portion; and a second fitting portion that is continuous with a second end portion of the shaft portion in the longitudinal direction of the shaft portion, wherein: the shaft portion has a minimum area portion that is located between the first end portion and the second end portion, and a radially cross-sectional area of the minimum area portion is 80% or below of a radially cross-sectional area of the first end portion and 80% or below of a radially cross-sectional area of the second end portion; a martensite fraction of a steel structure of the minimum area portion is 90% or above, a surface hardness of the minimum area portion and an average hardness of a radial cross section of the minimum area portion are 600 Hv or below; and an average hardness of a radial cross section of the first fitting portion and an average hardness of a radial cross section of the second fitting portion are 300 Hv or below.