X1NiCrMoCuN 25-20-7 1.4529 - EN 10217-7-2021

Grade	X1NiCrMoCuN 25-20-7
European Standard Steel Grade	1.4529
Corresponding Standard	EN 10217-7-2021 Part 7: Stainless steel tubes
Classification	Austenitic Stainless Steel

X1NiCrMoCuN 25-20-7 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N
Minimum Value	-	-	-	-	-	19	24	0.5	6	0.15
Maximum Value	0.02	0.5	1	0.03	0.01	21	26	1.5	7	0.25

X1NiCrMoCuN 25-20-7 Mechanical Properties

wall thickness T mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
T≤60	Solution annealing (+AT)	600~800	≥300	Rp1.0 ≥340	≥40(l) ≥40(t)	室温 ≥120(l)；≥90(t) -196°C ≥60(t)

• l=longitudinal；t=transverse

• Solution annealing temperature: 1120-1180°C, rapid cooling in water and air. Resistant to intergranular corrosion. Method C in EN ISO 3651-2-1998.

1 Approximate Comparison Table Austenitic Stainless Steel

China	United States		International Organization for Standardization		Germany		European Standard
GB	Commercial Grade	UNS	ISO	Numerical Grade	DIN EN/DIN	W-Nr.	EN	Numerical Grade
25-6Mo	Incoloy926	N08926	X1NiCrMoCuN25-20-7	4529-089-26-I	X1NiCrMoCuN25-20-7	1.4529	X1NiCrMoCuN25-20-7	1.4529

2 Approximate Comparison Table Austenitic Stainless Steel

X1NiCrMoCuN25-20-7 Corresponding Standards(Same grade name, different standards)

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