Duplex stainless steel is a type of alloy that combines austenitic and ferritic phases, offering an optimal balance of strength and corrosion resistance. Known for its high tensile strength and excellent resistance to pitting and stress corrosion cracking, duplex stainless steel is widely used in demanding environments such as oil and gas, chemical processing, and marine applications. Its lower nickel content compared to austenitic stainless steels makes it a cost-effective choice without sacrificing performance. The unique microstructure of duplex stainless steel also allows for enhanced weldability and toughness, making it suitable for various fabrication processes.
Equivalent Grades :
|
Euronorm |
UNS |
BS |
En |
Grade |
|
1.4462 |
S31803 |
318S13 |
– |
2205 |
|
1.4507 |
S32520 |
– |
– |
UR52N+ |
Chemical Compositions :
|
% |
2205 |
UR52N+ |
|
C |
0-0.03 |
0.03 max |
|
Mn |
2.0 |
1.5 |
|
Si |
1.0 |
0.8 |
|
P |
0-0.03 |
0.035 |
|
S |
0-0.02 |
0.02 |
|
Cr |
21-23 |
24-26 |
|
Mo |
2.5-3.5 |
3.0-5.0 |
|
Ni |
4.5-6.5 |
5.5-8.0 |
|
N |
0.08-0.2 |
0.2-0.35 |
|
Cu |
– |
0.5-3.0 |
Mechanical Properties :
|
Grade |
2205 |
UR52N+ |
|
Tensile Strength (MPa) |
620 |
770 |
|
Proof Stress 0.2% (MPa) |
450 |
550 |
|
Elongation A5 (%) |
25 |
25 |
