We offer API 5L X80 steel plate/pipes as large diameter pipes:

 

1. X80 Equivalent grades: EN10208-2 L555MB

 

2. X80 Chemical composition:

Si : ≤ 0.26 C: ≤ 0.08 Mn: ≤ 1.75　S : ≤ 0.0005 P : ≤ 0.011

AL : ≤ 0.03 Mo : ≤ 0.27 Ni: ≤ 0.22 Nb : ≤ 0.07

 

3. X80 Mechanical properties:

Tensile Strength σ b(MPa) : 625-700

Yield Strength σ 0.2(MPa): ≥ 555

Permissible yield point ratio: ≤ 0.9

Elongationδ 5(%): ≥ 20

 

4. X80 steel plate/pipes is one mainly of Steel for large diameter pipes, API-X80 steel with good low temperature toughness was developed and the buckling behavior of X80 steel plate/pipe was investigated through large scale deformation tester.