40cr seamless steel pipe and its chemical properties, hardness

The 40cr seamless steel tube is a 40Cr alloy tube. Because of its different manufacturing processes, it is divided into hot-rolled (extrusion) seamless steel tubes and cold drawn (rolled) seamless steel tubes. Cold drawn (rolled) tube is divided into two kinds of round tube and shaped tube.
Chemical composition and mechanical properties: Ingredient: carbon 0.37 to 0.45%, silicon 0.17 to 0.37%, manganese 0.5 to 0.8, chromium 0.8 to 1.1%
Annealed hardness: less than 207HBS
Normalizing hardness: less than 250HBS
Conditioning treatment: sample diameter: 25mm, 850 degree quenched heat oil quenched, 520 degrees tempered: Tensile 1000 MPa, Yield 800 MPa, Extension 9%, Section shrinkage 45%, Impact toughness 588.3 kJ/sq. Meter.
The Shandong seamless steel pipe knowledge is published by the editor of Shandong Seamless Steel Tube Factory. If you need to know more related knowledge, you can contact us at any time.

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