Real stabilizer , production method in steel and solid stabilizer for real stabilizer in

摘要

It is an object of the present invention is to provide a method of manufacturing a solid stabilizer solid stabilizer for steel processing highly bending, hardenability is high, cracking is high, and solid stabilizer, in high strength. By mass%, the real stabilizer for steel, C in: 0.24~0.40%, Si: 0.15~0.40%, Mn: 0.50~1.20%, P: 0.03% below, Cr: I containing from 0.0010 to 0.0030 percent: 0.30% or less, Ti: 0.01~0.03%, B. Real stabilizer for steel, to satisfy the conditions of the following formula (1) in. Hardness of the radial center in after tempering of real stabilizer for steel is more than 400HV, martensite rate in the radial direction in the center after tempering is 80% or more within. 1.24 (2C + 0.1Si + 0.4Mn + 0.4Cr) × {1+ (1.5B-300B ²⁾ × 240} 1.7 ··· formula (1)