The Mechanical Properties of Mild Steel Pipe

Mild steel  has a apparent  yield point,before clear sighs of the destruction(large deformation,elongation) is a ductile failure.

Mechanical properties of hard structural steel pipe

Hard steel(heat treatment of steel and high strength steel wire) is with high strength,but poor plasticity,and brittleness.From the load to suddenly pull off,virtually non-existent yield phase(flow increase),is a brittle failure.

Cold drawn and hot rolled bars are mild steel.Hard steel and mild steel is according to whether they exist division of the yield point,because hard steel has no significant yield point and plastic compared with mild steel,its control stress factor is low than mild steel.

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