What is the ASTM equivalent of 1.4410?

What Is EN 1.4410 Stainless Steel?

EN 1.4410, also known as X2CrNiMoN25-7-4, is a super duplex stainless steel grade defined by the EN 10088 standard. It offers outstanding resistance to pitting, crevice, and stress corrosion cracking, combined with very high mechanical strength, making it ideal for aggressive environments.

This material is widely used in offshore oil & gas, desalination systems, chemical processing, and high-chloride environments. In global trade, it's often referred to by its UNS or ASTM equivalents.

What is the ASTM equivalent of 1.4410?

Standard System	Equivalent Grade
UNS (USA)	S32750
ASTM	A182 F53, A240, A276, A479
AISI / Trade Name	2507
EN / ISO	X2CrNiMoN25-7-4
JIS (Japan)	SUS S32750
GB (China)	00Cr25Ni7Mo4N / S32750
NORSOK	MDS D57

What is the grade of 1.4410 material?

Grade :	X2CrNiMoN25-7-4
Number:	1.4410
Classification:	Austenitic-ferritic stainless steel - special grade
Density:	7.8 g/cm ³
Standard:	EN 10088-2: 2005 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 10088-3: 2005 Stainless steels. Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes

Chemical Composition of 1.4410 / S32750

Element	Content (%)
Cr	24.0 – 26.0
Ni	6.0 – 8.0
Mo	3.0 – 5.0
N	0.24 – 0.35
C	≤ 0.03
Mn	≤ 1.2
PREN	≥ 40 (Excellent)

EN 1.4410 Stainless Steel Mechanical Properties

	Yield strength Rp0.2, MPa	Tensile strength Rm, MPa	Elongation [%]	Hardness [HB]	Impact, Charpy-V, -46ºC [J]
BAR	≥ 550	≥ 750	≥ 25	≤ 300	≥ 65
PLATE CR (COIL)	≥ 550	750 – 1000	≥ 25	≤ 310	≥ 45
PLATE HR (COIL)	≥ 550	750 – 1000	≥ 25	≤ 310	≥ 45
PLATE (QUARTO)	≥ 550	750 – 930	≥ 25	≤ 310	≥ 45

 

physical properties of EN 1.4410 stainless steel (Super Duplex 2507, UNS S32750) 

Property	Value	Unit
Density	7.8	g/cm³
Melting Range	1350–1400	°C
Thermal Conductivity (20°C)	15	W/m·K
Electrical Resistivity (20°C)	0.8	µΩ·m
Specific Heat Capacity (20°C)	500	J/kg·K
Modulus of Elasticity	200	GPa
Coefficient of Thermal Expansion (20–100°C)	13.5	×10⁻⁶ /K

1.4410 VS. 1.4462 What's The Difference? 
EN 1.4410 (Super Duplex 2507) and EN 1.4462 (Duplex 2205) are both duplex stainless steels, but they differ significantly in performance. 1.4410 has a higher PREN (Pitting Resistance Equivalent Number) of ≥42, compared to 1.4462’s PREN of ≥35, indicating superior resistance to pitting and crevice corrosion in chloride-rich environments. 
In terms of strength, 1.4410 offers a higher yield strength of ≥550 MPa, while 1.4462 provides ≥450 MPa, making 1.4410 more suitable for high-stress applications.
Additionally, 1.4410 contains more chromium (~25%), molybdenum (~4%), and nitrogen, further enhancing its corrosion resistance and mechanical performance in harsh environments such as offshore and chemical processing industries.