About Alloy
F53 (UNS S32750) is a high alloy duplex stainless steel. F53 has excellent resistance to pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types. Due to this F53 stainless steel is used primarily in highly corrosive conditions.
Product Form & Standard
Forging: ASTM A182 F53
Bar/Rod ASTM A276, ASTM A479 F53
Chemical Composition
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu |
| Super Duplex F53 | 0.03 max | 1.2 max | 0.035 max | 0.015 max | 0.8 max | 24-26 | 6-8 | 3-5 | 0.3 | 0.5 max |
Mechanical Properties
| Alloy | Tensile Strength ksi | Proof Strength 0.2% ksi (min) | Elongation (%) (min) | Hardness Rockwell C |
| F53 Annealed Condition | 110-135 | 80 | 15 | 28 max |
Application
Oil and gas industry equipment
Offshore platforms, heat exchangers, process and service water systems, injection and ballast water systems
Chemical process industries, heat exchangers, vessels, and piping
Desalination plants, high pressure RO-plant and seawater piping
Mechanical and structural components, high strength, corrosion-resistant parts
Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping
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