30crmo steels are usually used in the tempered and tempered state, and can also be used as carburized steels with a lower carbon content. In the medium-sized machinery manufacturing industry, it is mainly used to manufacture the parts with large sections and working under high stress conditions, such as shaft, spindle and the control wheel, bolt, double-headed bolt and gear under high load.
In the chemical industry, it is used to manufacture welding structures of welded parts, plates and pipes and high-pressure pipes that work in a medium containing nitrogen and hydrogen at a temperature not exceeding 250℃.
In the steam turbine, boiler manufacturing industry for the production of fasteners under 450℃, 500℃ under the pressure of flange and nut, especially suitable for the production of 300 atmospheric pressure, 400℃ under the work of the duct.
30CrMo steel 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 Physical properties
Sample blank size (mm) : 25
Heat treatment:
First quenching temperature (℃) : 880; Coolant: water, oil
The second quenching temperature (℃) : -
Tempering temperature (℃) : 540; Coolant: water, oil
Sigma b/MPa: ≥930
Sigma /MPa: ≥785
Elongation after breaking (5/%) : ≥12
A reduction of area (bits / %) : 50 or more
Shock absorption work (Aku2/J) : ≥63
Brinell hardness (hbs100/3000) (annealed or tempered at high temperature) ≤229
Katalor can provide 30crmo plate, strip, tube, section steel, machining parts, drilling, bending and other deep processing for 30crmo. If you have purchase intention, please contact katalor immediately!
