API 5L X70 steel can be regarded as large diameter pipes. API 5L X70 steel with the demands in mechanical properties of the pipes followed the API specification for API 5L X70 steel (YS is 485MPa, TS is from 600-750 MPa). API 5L X70 steel is well known that a low carbon bainitic microstructure offers an excellent combination of strength and toughness.
API 5L X70 steel
API 5L X70 steel Chemical composition(%): Si:<=0.55 C:0.04-0.16 Mn:1.1-1.7 S:<=0.035 P:<=0.0.35
API 5L X70 steel Mechanical properties:
Tensile Strength σb(MPa) :600-750
Yield Strength σ0.2(MPa): >= 480
Permissible yield point ratio: <= 0.85
API 5L X70 steel Equivalent grades:
DIN 17172 StE 480.7TM , EN10208-2 L485MB
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Tags: API 5L X65 steel, API 5L X60 steel, API 5L X56 steel
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