1.4410
- S32750
- Alloy 2507
- X2 CrNiMoN 25-7-4
UNS S32750 is a duplex stainless steel especially designed for service in aggressive chloride-containing environments. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength. It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.
Mechanical Properties
| Tensile strength: | 750 | N/mm² |
| Yield strength 0,2% : | 550 | ≥ N/mm² |
| Elongation: | 25 | ≥ % |
| Hardness HB30: | 270 | ≤ HB |
Chemical Composition
Carbon
C
0,03% max
Silicon
Si
0,80% max
Magnese
Mn
1,20% max
Phosphorus
P
0,035% max
Sulphur
S
0,020% max
Chromium
Cr
24-26% max
Nickel
Ni
6-8% max
Nitrogen
N
0,24-0,32% max
Heat Treatment
Solution annealing at 1100°C followed by water quenching
High resistance to stress corrosion cracking in halide containing environments.
• High resistance to pitting and crevice corrosion.
• High resistance to general corrosion.
• High mechanical strength.
• High resistance to erosion corrosion and corrosion fatigue.
Very good
Marking
All material will be marked as follow:
- Manufacturer’s name
- Material grade
- Size
- Heat Number
Certification
Material will be delivered with certificate EN 10204 3.1
Other Duplex / Superduplex grades
| EURONORM/DIN | WERKSTOFF NR. | AISI | UNS | BRAND NAME |
|---|---|---|---|---|
| X2 CrNiMoN 25-7-4 | 1.4410 | F53 | S 32750 | URANUS 47N ® |
| X2 CrNiMoN 22-5-3 | 1.4462 | F51/F60 | S 31803/S32205 | URANUS 45N ® |
| X2 CrNiMoCuWN 25-7-4 | 1.4501 | F55 | S 32760 | ZERON 100 ® |
| X2 CrNiMoCuN 25-6-3 | 1.4507 | F61 | S 32550 |
