Abstract: According to requirement of mechanical properties and anti-corrosion for C90 anti-corrosion steel,the Cr3 steel  -0.24C,3.05Cr,0.48Mo,0.02Ti has been designed and developed. The mechanical properties of C90 anti-corrosion steel Cr3 produced by 30 t EBT are furnace -LF(VD)-φ110~140 mm HCC process at Hengyang Steel were σ_0.5 680 MPa,σ_b 780 MPa,δ₅₀ 24% and A_KV 51~60 J.With test according to API5CT, the anti- hydrogen sulphide corosion rate was 0.2375 mm/a in liquid phase and 0.6263 mm/a in gas phase which is higher than that of steel 28CrMoTi and steel SM90.

Key words: Cr3 Steel, C90 Oil-Well Tube Steel, Anti-Corosion

摘要： 根据C90耐腐蚀油管对力学性能和抗腐蚀性能的要求,设计和开发出成分(%)为:C 0.24,Cr3.05,Mo 0.48,Ti 0.02的Cr3型C90级耐腐蚀油管用钢。衡钢采用30 t EBT电弧炉-LF(VD)-Φ110~140 mm HCC工艺生产的Cr3型C90级耐腐蚀管用钢力学性能为σ_0.5 680 MPa,σ_b 780 MPa,δ₅₀ 24%,A_KV 51~60 J。按API5CT试验,该钢抗硫化氢应力腐蚀率为:液相0.2375 mm/a,气相0.6263 mm/a,优于28CrMoTi钢和SM90钢。

关键词: Cr3钢, C90级油井管钢, 耐蚀性