X2CrNiMoCuN25-6-3
1.4507Super duplex stainless steel — SAF 2507 / UNS S32750. PREN >40 giving outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride environments including hot seawater. 50/50 austenite-ferrite microstructure. UTS >800 MPa — roughly 2x the strength of 316L. Used for offshore oil/gas, desalination, chemical tankers, flue gas desulfurization, and subsea equipment.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS S32750 / SAF 2507 | S32750 | REF |
| 🇪🇺 | EN | Europe | X2CrNiMoCuN25-6-3 / 1.4507 | 1.4507 | 100% |
Sources: ASTM A240, EN 10088-3
Chemical composition comparison (wt%)
Side-by-side: X2CrNiMoCuN25-6-3 (EN) (EN 10088-3) vs X2CrNiMoCuN25-6-3 / 1.4507 (EN) (EN 10088-3)
| Element | X2CrNiMoCuN25-6-3 (EN) | X2CrNiMoCuN25-6-3 / 1.4507 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.03% | 0–0.03% | OK |
| Si | 0–0.8% | 0–0.8% | OK |
| Mn | 0–1.2% | 0–1.2% | OK |
| P | 0–0.035% | 0–0.035% | OK |
| S | 0–0.015% | 0–0.015% | OK |
| Cr | 24–26% | 24–26% | OK |
| Mo | 3–5% | 3–5% | OK |
| Ni | 6–8% | 6–8% | OK |
| Cu | 0–0.5% | 0–0.5% | OK |
| N | 0.24–0.32% | 0.24–0.32% | OK |
Mechanical properties
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 800 | MPa |
| Yield Strength | ≥ 530 | MPa |
| Elongation | ≥ 20 | % |
| Hardness HB | ≤ 310 | HB |
| Elastic Modulus | ≥ 200 | GPa |
| Density | ≥ 7.8 | g/cm3 |
Compatibility verdict
X2CrNiMoCuN25-6-3 and X2CrNiMoCuN25-6-3 / 1.4507: 100% composition match
Close equivalents but NOT identical.
Related materials
304 Stainless Steel
1.4301The most widely used austenitic stainless steel. Excellent corrosion resistance, good formability and weldability. Standard choice for food processing, chemical, and architectural applications.
316L
1.4404Low-carbon austenitic stainless steel with molybdenum addition. Superior corrosion resistance to 304, especially against chlorides and pitting. Standard choice for chemical processing, marine, medical implants, and pharmaceutical equipment.
430 Stainless Steel
1.4016Ferritic chromium stainless steel with good corrosion resistance and formability. Lower cost than austenitic grades. Used for automotive trim, kitchen sinks, architectural panels, and appliance components.
Not sure which material fits?
🤖 Ask AI Advisor →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.