1.4462
S31803
Alloy 2205
318LN
This duplex material has a good resistance against pitting and stress corrosion cracking. Unique combination of corrosion resistance, resistance to stress corrosion cracking, high tensile and yield strength. Aplication fields: for use in: high temperature chloride contaminated water; sea water; brakish water: deteriorating solid matters; sour gas, Petrochemistry; ocean engineering-polishable
Mechanical Properties
| Tensile strength: | 650-880 | N/mm² |
|---|---|---|
| Yield strength 0,2% : | 450 | ≥ N/mm² |
| Elongation: | 25 | ≥ % |
| Hardness HB30: | 270 | ≤ HB |
Chemical Composition
CARBON
C
0,30% max
SILICON
Si
1,00% max
MAGNESE
Mn
2,00% max
PHOSPHORUS
P
0,035% max
SULPHUR
S
0,030% max
CHROMIUM
Cr
21-23% max
NICKEL
Ni
4,5-6,5% max
NITROGEN
N
0,1-0,2% max
Heat Treatment
Corrosion testing
Welding
Marking
Certification
1020-1100°C followed by rapid cooling in air or water.
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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