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X56 steel

X56 steel plate, API 5L X56 steel pipes, under API 5L standard, we can regard X56 steel plate/pipes as large diameter pipes.

X56 steel pipes is one mainly of Steel for large diameter pipes,API-X560 steel for the manufacture of buried pipelines for transporting natural gas can succumb to severe degradation due to corrosion by the soil through. The types of corrosion of steel that can be produced are often general corrosion and pitting.And the followings are the chemical composition and the mechanical properties of API X56 steel.

The chemical composition of steel API 5L X56 by [%]

Grades C
max
Si
max
Mn.
max
P
max
S
max
Ti
max
Nb+V+Ti
max
X56 0.22 0.015 1.40 0.025 0.015 0.04 0.15

Mechanical properties of API X56 steel

 
Grade
Permissible yield point
ratio
Yield Strength
MPa
Tensile Strength
MPa
Elongation
% (min)
X56 -  386-544 490-758     -