Material database

Super Duplex 2507

Super Duplex Stainless Steel. Values below are the requirements of the standard named beside them; the mill certificate governs the material delivered.

Designations

UNS
S32750
EN number
1.4410
EN name
X2CrNiMoN25-7-4

Density

Density
7800 kg/m³
Per
Alleima
Corrosion resistance
Excellent
Product forms
Sheet, plate, pipe, bar

Chemical composition

Chemical composition — mass %
StandardProduct formBasisCSiMnPSCrNiMoNCu
ASTM A240 / UNS S32750Plate/Sheet/StripSpecification≤ 0.03≤ 0.8≤ 1.2≤ 0.035≤ 0.0224–266–83–50.24–0.32≤ 0.5

mass %. A blank cell means the standard sets no requirement for that element, not zero. Single values are limits: "≤" a maximum, "≥" a minimum.

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Mechanical properties

Mechanical properties
StandardProduct formCondition / temperTest temperatureYieldTensileElongation minHardness maxNotes
ASTM A240 / S32750Plate/Sheet/StripSolution annealed20 °C0.2% offset ≥ 550 MPa≥ 795 MPa15 % (Product dependent)310 HBWMinimum values typical for S32750 A240.

Each row is one standard, one product form and one condition — the values do not transfer across rows. A blank cell means the standard sets no requirement.

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Physical properties

Physical properties
TemperatureDensityYoung’s modulusPoisson’s ratioThermal expansion (20–100°C)Thermal conductivity (20°C)Specific heatElectrical resistivity (20°C)Melting rangeMagnetic
20 °C7800 kg/m³200 GPa0.313 µm/m·°C14 W/m·K0.485 kJ/kg·°C0.8 µΩ·m1350–1450 °CMagnetic

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Typical applications

Seawater, desalination, oil & gas

Approximate equivalents

Approximate equivalents: equivalents are a technical reference, not a substitution instruction, verify against project specification.

Approximate equivalents
GradeSystemsRelationshipNoteKey difference
Super Duplex 2507UNS → ENSame grade, another designationCommon super duplex 2507 designation family.Confirm product specification. Compared designation: 1.4410.

Common questions

01What is the density of Super Duplex 2507?
7800 kg/m³ — the figure the weight calculators on this site use for Super Duplex 2507. The value is Alleima’s.
02What is the chemical composition of Super Duplex 2507?
C ≤ 0.03, Si ≤ 0.8, Mn ≤ 1.2, P ≤ 0.035, S ≤ 0.02, Cr 24–26, Ni 6–8, Mo 3–5, N 0.24–0.32, Cu ≤ 0.5, in mass %, to ASTM A240 / UNS S32750. An element the standard sets no requirement for is left blank here rather than written as zero.
03What are the mechanical properties of Super Duplex 2507?
Tensile ≥ 795 MPa, Yield ≥ 550 MPa, Elongation min ≥ 15 % — ASTM A240 / S32750, Plate/Sheet/Strip, Solution annealed. Those are the standard’s requirements; the mill test certificate governs the metal delivered.
04What is Super Duplex 2507 used for?
Seawater, desalination, oil & gas