Development of 25MnCrNiMoA Round Steel for Forging Hook Tail Frame
PEI Jianhua
ZHAI Zhenglong
YUAN Shujun
LI Xiaoxiong
Abstract：According to the bad using condition of hook tail frame, the strict technical requirements of developing 25MnCrNiMoA steel for hook tail frame was made. By controlling the chemical composition and adopting reasonable processes (EAF→LF→VD→CC→CR), developed 25MnCrNiMoA steel have high cleanliness and good microstructure. The test showed that the yield strength (Rp0.2)≥750 MPa, the Rm≥890 MPa and the ductile brittle transition temperature(DBTT) is-50℃. At present, the 25MnCrNiMoA steel has formed a small batch production, the product quality is stable and reliable, and each performance index meets the technical agreement and customer requirements.
Keywords：hook tail frame steelhot rolled rounds25MnCrNiMoAimpact propertyDBTT
Publication Date：2013-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 6-8 )