F51 Duplex 2205 Forgings Manufacturer & Supplier
Duplex stainless forgings with a roughly even ferrite-austenite balance: double the yield strength of 316 and far better chloride stress corrosion resistance. The forging and heat treatment window is narrow because the phase balance must survive it.
UNS: ASTM A182 F51 / UNS S31803 | Category: Duplex Forgings
Size Range
Outer Diameter: NPS 1/2 to 36 · forged weight 1 kg to 4 T
Chemical Composition (%)
| Cr | Ni | Mo | N |
|---|---|---|---|
| 21.0-23.0 | 4.50-6.50 | 2.50-3.50 | 0.08-0.20 |
Mechanical Properties
- Tensile Strength
- 620 MPa min
- Yield Strength
- 450 MPa min
- Elongation
- 25% min
- Hardness
- 293 HBW max
Applicable Standards
- ASTM A182
- NORSOK M-650
- ASTM A923
- ASTM A388
- EN 10204 3.1
Applications
- Subsea and topside valve bodies
- Seawater pump and injection components
- Chloride service flanges and fittings
- Desalination high pressure parts
- Chemical tanker cargo pump parts
Industries Served
- Oil & Gas
- Chemical & Petrochemical
- Power & Energy
- Marine & Shipbuilding
- Pumps & Valves
- Defence
Equivalent Grades
- ASTM A182 F51
- ASTM A182 F51
- UNS S31803
- UNS S31803
- UNS S32205
- UNS S32205
- 1.4462
- 1.4462
- 2205
- 2205