GX5CrNiMoNb19-11-2 1.4581 - ISO 4991-2024

Grade	GX5CrNiMoNb19-11-2
ISO Numeric Designation	1.4581
Corresponding Standard	ISO 4991-2024 Steel castings for pressure purposes
Classification	Cast Steel

GX5CrNiMoNb19-11-2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	-	-	-	-	-	18	9	-	2	Nb: 8×C~1.00
Maximum Value	0.07	1.5	1.5	0.04	0.03	20	12	0.5	2.5	Nb: 8×C~1.00

GX5CrNiMoNb19-11-2 Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
t ≤ 150	solution treated (+AT) solution temperature 1080~1150°C	440~640	Rp1.0 ≥210	A: ≥25	≥60

1 Approximate Comparison Table Cast Steel

China	International Organization for Standardization
GB	ISO	Numerical Grade
ZG07Cr19Ni11Mo2Nb	GX5CrNiMoNb19-11-2	1.4581

2 Approximate Comparison Table Corrosion-Resistant Cast Steels

Japan	International Organization for Standardization
JIS	ISO
SCS 14XNb	GX5CrNiMoNb19-11-2

GX5CrNiMoNb19-11-2 Corresponding Standards(Same grade name, different standards)

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