40Cr steel pipe introduction

After quenching and tempering treatment, 40Cr steel pipe has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity.

Chemical composition of 40Cr steel pipe (mass fraction, %):
C:0.37~0.44
Si:0.17~0.37
Mn:0.50~0.80
Cr:0.80~1.10
Ni:≤0.30

40Cr steel pipe mechanical properties:
Tensile strength (σb/MPa): ≧980
Yield point (σs/MPa): ≧785
Elongation after break (δ5/%): ≧9
Reduction of area (ψ/%): ≧45
Impact absorption energy (Aku2/J): ≧47
Brinell hardness (HBS100/3000) (annealed or high temperature tempered state): ≦207

40Cr steel pipe use:
40Cr steel pipes are used to manufacture mechanical parts that are subjected to medium loads and medium speeds, such as steering knuckles, rear axle shafts of automobiles, gears, shafts, worms, spline shafts, top sleeves, etc. on machine tools; after quenching and tempering at medium temperature Used to manufacture parts that withstand high load, impact and medium speed, such as gears, main shafts, oil pump rotors, sliders, collars, etc.;

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