UNS S32750, often referred to as Alloy 2507, contains 25% chromium and 7% nickel in addition to a small percentage of copper to enhance its general corrosion resistance. This super duplex grade offers high strength and excellent resistance to pitting and crevice corrosion and chloride stress corrosion cracking. It is widely used in marine, oil and gas exploration/production and heat exchangers in petrochemical/chemical processing.
S32750 Specifications:
S32750 sheet/plate/coil: ASTM A240
S32750 seamless pipe/tube: ASTM A789, ASTM A790
S32750 welded pipe/tube: ASTM A928
S32750round bar: ASTM A479, ASTM A276
S32750 Duplex Flanges: ASTM A182 F53
Chemical composition:
|
Cr |
Ni |
Mo |
N |
Mn |
Si |
C |
Cu |
S |
P |
|
24.0-63.0 |
6.0-8.0 |
3.0-3.5 |
0.14-0.2 |
1.2 max |
0.8 max |
0.03 max |
0.5 max |
0.02 |
0.035 |
Mechanical Properties:
| Density,g/c㎡ | 7.8 |
| Melting range,℃ | 1350-1390 |
| Tensile strength, min, Mpa | 800 |
| Yield strength, 0.2% offset, min, Mpa | 550 |
| Elongation, A5% | 15 |
| Hardness, Brinell | 310 MAX |
Applications:
It is particularly suited for use in aggressive environments such as warm chlorinated seawater
and acidic, chloride containing media. It is widely used in marine environments, petrochemical/chemical processing.
Chloroethylene production equipment, methanol synthesis reactor, acetic acid transport and storage.
Oil and gas exploration and transportation, Catalytic cracking equipment, hydrotreating equipment.
Alloy S32750 is widely used in oil and gas industrial, marine industrial, chemical processing and nuclear industrial due to their excellent strength and good corrosion resistance.