30CrNiMo8 forged square steel forgings forged round steel

　　Delivery status: EAF Electric Arc Furnace +LF Refining +VD (Vacuum Degassing)+Forging (Secondary)+Length Customizable Gauge+Two End Sawing (Turning/Black Skin Polishing)+Heat Treatment (Normalizing/Annealing/Quenching and Tempering) +SEP1921 C/c Level Flaw Detection (GB Level II Flaw Detection)

　　U.S. Standard, European Standard, Japanese Standard and Korean Standard Export Tax Refund Forged Round Steel/Square Steel/Forging/Module/Ingot/Forging Shaft/Electroslag Steel/Fan Shaft/Intermediate Roll/Roll/Ship Shaft.

　　Specification: φ 80-φ 1200 mm forged round steel length: 2-16m

　　German DIN standard 30CrNiMo8 is quenched and tempered steel.

　　It is equivalent to 30Cr2Ni2Mo in China.

　　It has high yield strength, tensile strength and fatigue strength, as well as sufficient plasticity and toughness.

　　Generally, electric arc furnace and oxygen top-blown converter are used for smelting, and high-demand ones include out-of-furnace refining, electroslag remelting or vacuum treatment, vacuum induction furnace smelting or double vacuum smelting, and appropriate heat treatment.

　　Chemical composition (%):

　　C(0.26-0.34)

　　Si(0.4)

　　Mn(0.3-0.6)

　　p(0.035)

　　s(0.035 )

　　Cr(1.8-2.2)

　　Mo(0.3-0.5)

　　Ni(1.8-2.2)

　　Simplify the chemical composition (%) of 30CrNiMo8:

　　C:0.30

　　Mn:0.40

　　Cr:2.00

　　Ni:2.0

　　Mo:0.30

　　30CrNiMo8 is very difficult to process. It is very difficult for 30CrNiMo8 to be below HRB80. generally, it is enough to be around HRB85.

　　It is widely used, not only for high-pressure chemical vessels with high pressure and frequent fluctuation, but also for pressure pipelines, plastic molds, important structures, etc. For example, FD70A and FD77A wind turbine main shafts of Dongfang Steam Turbine Factory are made of high-quality alloy steel (30CrNiMo8) forgings.