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
| Standard | Product form | Basis | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A240 / UNS S32750 | Plate/Sheet/Strip | Specification | ≤ 0.03 | ≤ 0.8 | ≤ 1.2 | ≤ 0.035 | ≤ 0.02 | 24–26 | 6–8 | 3–5 | 0.24–0.32 | ≤ 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
| Standard | Product form | Condition / temper | Test temperature | Yield | Tensile | Elongation min | Hardness max | Notes |
|---|---|---|---|---|---|---|---|---|
| ASTM A240 / S32750 | Plate/Sheet/Strip | Solution annealed | 20 °C | 0.2% offset ≥ 550 MPa | ≥ 795 MPa | 15 % (Product dependent) | 310 HBW | Minimum 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
| Temperature | Density | Young’s modulus | Poisson’s ratio | Thermal expansion (20–100°C) | Thermal conductivity (20°C) | Specific heat | Electrical resistivity (20°C) | Melting range | Magnetic |
|---|---|---|---|---|---|---|---|---|---|
| 20 °C | 7800 kg/m³ | 200 GPa | 0.3 | 13 µm/m·°C | 14 W/m·K | 0.485 kJ/kg·°C | 0.8 µΩ·m | 1350–1450 °C | Magnetic |
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.
| Grade | Systems | Relationship | Note | Key difference |
|---|---|---|---|---|
| Super Duplex 2507 | UNS → EN | Same grade, another designation | Common 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