1.4410
S32750
Alloy 2507
X2 CrNiMoN 25-7-4
NS 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
Corrosion testing
Welding
Marking
Certification
Solution annealing at 1100°C followed by water quenching
OTHER DUPLEX & SUPERDUPLEX GRADES
| Tensile strength: | 500-700 | N/mm² |
| Yield strength 0,2% : | 200 | ≥ N/mm² |
| Elongation: | 40/30 | ≥ % |
| Hardness HB30: | 215 | ≤ HB |
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