Duplex Steel F51 (UNS S31803) / F60 (UNS 32205) / 1.4462
A duplex austenitic-ferritic chromium-nickel-molybdenum stainless steel.
F51 Duplex Stainless Steel combines improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength. Due to it’s chemical composition F51 duplex stainless steel resists chloride environments and sulphide stress corrosion.
<<DATA SHEET>>
Technical challenges
We can effectively control the temperature at the beginning and end of the forging process, as well as manage the temperature during solution treatment, ensuring it meets the requirements for low-temperature impact.
Chemical Composition Limits
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| Duplex F51 | 0.03 max | 2.0 max | 0.03 max | 0.02 max | 1 max | 21-23 | 4.5-6.5 | 2.5-3.5 | 0.80-0.20 |
EN 10088-3
| Mechanical Property | Value |
| Proof Stress | 450 Min MPa |
| Tensile Strength | 650 to 880 MPa |
| Elongation A50 mm | 25 Min % |
| Hardness Brinell | 270 Max HB |
| Physical Property | Value |
| Density | 7.805 g/cm³ |
| Thermal Expansion | 13.7 x10-6/K |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 19.0 W/m.K |
| Electrical Resistivity | 0.85 x10-6 Ω .m |
Availability
Duplex F51 is available in Plate, Sheet, Round Bar, Flat Bar and Forging Stock for sizes contact Sales.
Specifications
ASTM A182 F51 / F60
ASTM A276 F51 / F60
ASTM A479 F51
AISI F51
BS 318S13 (Wrought)
BS 332C15 (Cast)
WS 1.4462
WS 1.4470
X2CrNiMoN22.5.3
AFNOR Z2CND22.05Az
UNS S31803
UNS S32205
SAF2205 – SANMAC (Brand name)
URANUS 45N (Brand name)
FALC223 (Brand name)
Characteristics
Higher strength than standard stainless steels
Higher corrosion resistance than Alloy 316L stainless steel in a wide variety of corrosive chemicals including sulphuric, phosphoric and nitric acids
Good resistance to pitting and crevice corrosion in seawater
High stress corrosion resistance
Lower thermal expansion than austenitic stainless steels
Higher thermal conductivity than austenitic stainless steels
Applications
- Process industry components in sulphuric acid, nitric acid, phosphoric acid, ethylene oxide, polypropylene & PVC production
- Equipment handling organic & fatty acids, chemical storage, tankers, heat exchangers
- Marine industry and shipbuilding propellers, shafts, rudders, shaft seals, pumps, bolts, fasteners, valves, instrumentation
- Oil and chemical tankers
- Oil & Gas industry pumps, valves, pipe, vessels, wellhead equipment, subsea equipment, separators, heat exchangers
- Pollution control systems, effluent scrubbing, flue gas desulphurisation (FGD)
- Waste water treatment, sour water purification
- Pulp & paper industry applications such as pulp liquor heaters, bleach tower linings, digesters, brownstock washers
- Food industry applications including brewery piping, evaporators, hot liquor tanks, presses
