X10CrMoVNb9-1 1.4903 - EN 10222-2-2017

Grade	X10CrMoVNb9-1
European Standard Steel Grade	1.4903
Corresponding Standard	EN 10222-2-2017 Steel Forgings for Pressure Purposes. Part 2:Ferritic and Martensitic Steels with Specified Elevated Temperature Properties
Classification	Alloy Steel

X10CrMoVNb9-1 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	V	Nb	Al
Minimum Value	0.08	-	0.3	-	-	8	-	-	0.85	0.03	0.18	0.06	-
Maximum Value	0.12	0.5	0.6	0.02	0.005	9.5	0.3	0.3	1.05	0.07	0.25	0.1	0.04

X10CrMoVNb9-1 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
630~830	≥450	I：≥19，tr/t：≥17	I：≥40，tr/t：≥34

1 Approximate Comparison Table Pressure-Bearing Flat Steel

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
X10CrMoVNb 9-1	X10CrMoVNb 9-1	1.4903

2 Approximate Comparison Table Seamless Steel Tubes and Pipes for High Pressure Boiler

X10CrMoVNb9-1 Corresponding Standards(Same grade name, different standards)

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