25Cr2MoVA A31253 - GB /T 20410-2006

Grade	25Cr2MoVA
China ISC	A31253
Corresponding Standard	GB /T 20410-2006 Steels for Turbine Bolts at High Temperature
Classification	Alloy Steel
Properties	High-Temperature Resistance Impact Resistance Good Forgability Good Machinability High Hardenability

25Cr2MoVA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
Minimum Value	0.22	0.17	0.4	-	-	1.5	-	-	0.25	0.15
Maximum Value	0.29	0.37	0.7	0.025	0.025	1.8	0.3	0.25	0.35	0.3

25Cr2MoVA Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
d=25	Quenching + Tempering	≥930	≥785	≥14	HBW10/3000 248~293	≥63
	High Temperature Tempering				≤241

Approximate Comparison Table Structural Alloy Steel

25Cr2MoVA Corresponding Standards(Same grade name, different standards)

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