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
δ
50
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。
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
δ
50
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.