30crmo alloy structural steel, also known as 30crmo combined steel, is based on the carbon structure, adding one or several elements. The addition of alloy elements in steel, first of all, improves the hardenability of the steel, and ensures that
30crmo steel obtains good comprehensive mechanical properties after heat treatment, with high strength and enough toughness.
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
30CrMO has high static strength, fatigue limit and impact toughness, so it is widely used in the production of sucker rod. If you need 30CrMO steel, please contact us immediately!
