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
1,0% max
Magnese
Mn
2,0% 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
0,1-02% max
Heat Treatment
1020-1100°C followed by rapid cooling in air or water.
- resistant to intercrystalline corrosion
- satisfactionary against pitting corrosion
Well weldable
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
