30CrMo steel round bar Heat treatment

30CrMo steel round bar has high strength, toughness and hardenability, 30CrMo30CrMo steel round bar ,also known as chromium-molybdenum alloy steel, 30CrMo steel round bar is an alloy of 30 refers to the carbon content.

30CrMo steel round bar is used make all kinds of fasteners, high pressure pipe and more advanced carburized parts, such as gear, shaft, etc ,which work in the noncorrosive medium and temperature below 250 ℃, working with nitrogen hydrogen mixture in the medium.

30CrMo steel round bar Chemical composition(%)

C:0.26-0.34 Si:0.17-0.37 Mn:0.40-0.70 Cr:0.80-1.10 Mo:0.15-0.25 P:≤0.035 S:≤0.035 Ni:≤0.030 Cu:≤0.030

30CrMo steel round bar Mechanical properties

Heat treatment:

The first quenching temperature (℃): 880; Coolant: water, oil

The second quenching temperature (℃): - tempering heating temperature (℃): 540; Coolant: water, oil

Tensile strength (σb / MPa): ≧ 930 yield point (σs / MPa): ≧ 785

Elongation (δ5 /%): ≧ 12 section shrinkage (ψ /%): ≧ 50

Impact energy (Aku2 / J): ≧ 63

Brinell hardness (HBS100/3000) ( annealing or tempering state ): ≦ 22930crmo heat treatment

Annealing annealing No.1 "760 ± 10 ℃ annealing furnace cooling to 400 ℃ air-cooled

BBN Steel is 30CrMo steel round bar manufacturer in china.If you want to know more 30CrMo steel round bar information,please tell us your steel requirements by email or contact us on line freely.

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