UNS S32205 is the representative grade of super duplex stainless steel based on 26% chromium and 6% nickel composition. S32550 is designed for high strength occasion where need good resistance to chemical corrosion and attack from seawater due to it has very good pitting and crevice corrosion resistance resulting from a controlled addition of copper. Alloy S32205 is suitable for use in seawater and other chloride-containing environments.
JIS designation: SUS 329J3L
EN/DIN Numerical Equivalent:1.4507
EN/DIN Symbolical Equivalent:X2CrNiMoCuN25-6-3
SAE J405
S32205 Specifications:
S32205 sheet/plate/coil: JIS G4304 / 4305, ASTM A240
S32205seamless pipe/tube: ASTM A789, ASTM A790
S32205 welded pipe/tube: ASTM A928, ASTM A789
S32205round bar: ASTM A479, ASTM A276
S32205 Duplex Flanges: ASTM A182 F60
Chemical composition:
|
Cr |
Ni |
Mo |
N |
Mn |
Si |
S |
P |
C |
|
22.0-23.0 |
4.5-6.5 |
3.0-3.5 |
0.14-0.2 |
2.00 max |
1.00 max |
0.02 |
0.03 |
0.03 max |
Mechanical Properties:
| Density, g/c㎡ | 7.8 |
| Melting range, ℃ | 1350-1390 |
| Tensile strength, min, Mpa | 655 |
| Yield strength, 0.2% offset, min, Mpa | 450 |
| Elongation, A5% | 25 |
| Hardness, Brinell | 290 MAX |
Applications:
Duplex stainless steels S32205 are typically used in:
Chloroethylene production equipment, methanol synthesis reactor, acetic acid transport and storage
Oil and gas exploration and transportation, Catalytic cracking equipment, hydrotreating equipment
Marine environments, Pollution control equipment, Pulp & paper manufacturing, Food processing plant and so on.
Alloy S32205 is widely used in oil and gas industrial, marine industrial, chemical processing and nuclear industrial due to their excellent strength and good corrosion resistance.