X10CrMoVNb9-1 1.4903 - EN 10216-2-2024

Grade	X10CrMoVNb9-1
European Standard Steel Grade	1.4903
Corresponding Standard	EN 10216-2-2024 Seamless Steel Tubes for Pressure Purposes - Technical Delivery Conditions - Part 2: Non-Alloy and Alloy Steel Tubes 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	Ti	V	Nb	Zr	Al
Minimum Value	0.08	0.2	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	0.4	0.3	1.05	0.07	0.01	0.25	0.1	0.01	0.02

X10CrMoVNb9-1 Mechanical Properties

wall thickness T mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
T≤100	630~830	ReH ≥450	l: ≥19；t: ≥17	20°C: l: ≥40；t: ≥27

• l = longitudinal; t = transverse.

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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