310S / X8CrNi25-21 vs Super Duplex 2507: 49% composition overlap. Significantly different materials serving different application areas.
310S / X8CrNi25-21 vs Super Duplex 2507
Side-by-side chemical composition and mechanical property comparison.
Overview
310S / X8CrNi25-21
1.4845
High-chromium, high-nickel austenitic for the highest service temperatures among standard austenitics. Oxidation resistance to ~1100°C (continuous). Higher Cr/Ni than 309S. Used for furnace parts, radiant tubes, heat treatment baskets, kiln liners, and high-temperature flue gas equipment.
Super Duplex 2507
1.4410
Super duplex stainless steel with PREN >40. Superior corrosion resistance to standard 2205 duplex, especially in chloride and H₂S environments. Used for subsea pipelines, offshore platform components, desalination plants, and chemical processing equipment.
| 310S / X8CrNi25-21 | Super Duplex 2507 | |
|---|---|---|
| Material Number | 1.4845 | 1.4410 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%) — Pro
| Element | 310S / X8CrNi25-21 | Super Duplex 2507 | Overlap |
|---|---|---|---|
| C | 0–0.1% | 0–0.03% | OK |
| Si | 0–1.5% | 0–0.8% | OK |
| Mn | 0–2% | 0–1.2% | OK |
| P | — | 0–0.035% | — |
| S | |||
| Cr | |||
| Mo | |||
| Ni | |||
| N |
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Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | 310S / X8CrNi25-21 | Super Duplex 2507 | Unit |
|---|---|---|---|
| Tensile Strength | 500–700 | 730–930 | MPa |
| Yield Strength | ≥ 210 | ≥ 530 | MPa |
| Elongation | ≥ 35 | ≥ 20 | % |
| Elastic Modulus | |||
| Density | |||
| Hardness HB |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
310S / X8CrNi25-21 and Super Duplex 2507 have significantly different compositions (49% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 310S / X8CrNi25-21 the same as Super Duplex 2507?
310S / X8CrNi25-21 and Super Duplex 2507 have a 49% composition overlap. They are generally not directly interchangeable.
Can I replace 310S / X8CrNi25-21 with Super Duplex 2507?
Generally not recommended. The compositions differ significantly (49% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 310S / X8CrNi25-21 and Super Duplex 2507?
The main differences are in the following elements: Ni. 310S / X8CrNi25-21 is a Stainless Steel grade, while Super Duplex 2507 is a Stainless Steel grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.