30Cr2Ni4MoV - JB /T 7027-2014

Grade	30Cr2Ni4MoV
Corresponding Standard	JB /T 7027-2014 Rotor Forings for 300 MW Steam Turbines and above - Technical Specification
Classification	Alloy Steel

30Cr2Ni4MoV Chemical Element Composition Content (%)

Component	C ^③	Si ^①	Mn	P	S	Cr	Ni	Cu	Mo	As	V	Al	Sn	Sb ^②
Minimum Value	-	-	0.2	-	-	1.5	3.25	-	0.25	-	0.07	-	-	-
Maximum Value	0.35	0.1	0.4	0.01	0.01	2	3.75	0.15	0.6	0.02	0.15	0.01	0.015	0.0015

30Cr2Ni4MoV Mechanical Properties

	Mark	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
Body radial, Shaft end	Strength grade 690	≥790	690~790	A50(d0=12.5) ≥18	≥56	Radial of main body ≥95*
Center hole (Longitudinal)	Strength grade 690	≥760	≥660	A50(d0=12.5) ≥18	≥53	≥61*
Body radial, Shaft end	Strength grade 760	≥860	760~860	A50(d0=12.5) ≥17	≥53	Radial of main body ≥81*
Center hole (Longitudinal)	Strength grade 760	≥830	≥720	A50(d0=12.5) ≥16	≥45	≥41*

30Cr2Ni4MoV Corresponding Standards(Same grade name, different standards)

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