Abstract: The main chemical compositions of spring steel 38SiMnVBE are 0.37～0.42C,0.80～1.20Si,1.20~ 1.60Mn,0.08～0. 14V,0.0005～0.0035B,and the steel requires P≤0.025%,S≤0.015% and[0]≤15×10-⁶. The strength of steel 38SiMnVBE is 1905～2020 MPa,0.2% yield strength 1715～1850 MPa,elongation 9.0%~ 11.5%,reduction of area 44%～54%, which are higher than that of DAC series spring steel and steel 60Si2CrV in present ISO and state standard. The steel 38SiMnVBE has excellent hardenability. The test and application of the steel used for high stress and properties auto leaf spring, variable section leaf spring, suspend self spring have been carried out.

摘要： 38SiMnVBE 弹簧钢的主要成分(%)为：0.37～0.42C,0.80～1.20Si,1.20～1.60Mn,0.08～0. 14V,  0.0005～0.0035B,该钢要求P≤0.025%,S≤0.015%,[0]≤15×10-⁶ 。38SiMnVBE 钢的抗拉强度为1905~ 2020MPa,0.2%屈服强度1715～1850 MPa,延伸率9.0%～11.5%,断面收缩率44%～54%,高于现有国际和 国家标准中 DAC类钢和60Si2CrVA的性能。该钢具有优良的淬透性。已在高应力、高性能汽车板簧，变截面 板簧、轿车前、后悬架簧上进行试验和应用。

关键词: 高强韧性, 高淬透性, 弹簧钢38SiMnVBE