F51 duplex stainless steel, also known as S31803, is a type of duplex stainless steel that combines the desirable properties of both austenitic and ferritic stainless steels. This dual-phase structure offers a balance of high strength, excellent corrosion resistance, and good weldability.
F51 duplex stainless steel combines improved resistance to stress corrosion cracking, pitting, crevice corrosion, and high strength. Due to its chemical composition, F51 duplex stainless steel effectively resists chloride environments and sulphide stress corrosion. This makes it particularly suitable for use in harsh and corrosive conditions where these forms of degradation are a concern.
F51 Duplex Stainless Steel Supplier
Amardeep Steel Supplier of F51 duplex steel has excellent corrosion resistance, increased resistance to chloride attack and good resistance to stress corrosion cracking. F51 tensile and yield strength is higher than conventional austenitic or ferritic grades of stainless steel. It has good weldability and good formability.
ASTM A182 F51 Duplex Stainless Steel Specification
| Specification | ASTM A182 / ASME SA182 F51 |
| UNS Grade | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | ½” to 24″ |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
F51 Duplex Stainless Steel Chemical Composition
| 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 |
F51 Duplex Stainless Steel Mechanical Properties
| Alloy | Tensile Strength N/mm² | Proof Strength 0.2% N/mm² | Elongation (%) |
Hardness Brinell |
| F51 | 105 | 55 | 35 | 170-255 |
| F51 | 95 | 50 | 35 | 170-255 |
F51 Duplex Stainless Steel Physical Property
| Density | Thermal Expansion | Modulus of Elasticity | Thermal Conductivity | KElectrical Resistivity |
| 7.805 g/cm³ | 13.7 x10-6/K | 200 GPa | 19.0 W/m. | 0.85 x 10-6 Ω .m |
ASTM A182 F51 Equivalent
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 31803 | 1.4462 | S31803 |
F51 Duplex Stainless Steel Applications
- Oil and Gas Industry: F51 is ideal for offshore platforms, pipelines, and pressure vessels due to its resistance to stress corrosion cracking and chloride-induced corrosion.
- Chemical Processing: It is used in tanks, heat exchangers, and other equipment that handles corrosive chemicals, providing durability and reliability in aggressive environments.
- Marine Applications: The material’s excellent resistance to seawater corrosion makes it suitable for shipbuilding, marine hardware, and desalination plants.
- Pulp and Paper Industry: F51 is employed in the construction of digesters, bleaching equipment, and other machinery exposed to harsh chemicals and conditions.
- Construction: Its high strength and corrosion resistance make it useful in structural components, bridges, and other infrastructure projects that require long-lasting performance.
- Power Generation: Used in components for nuclear and fossil fuel power plants, F51 provides strength and resistance to high temperatures and corrosive environments.
- Desalination Plants: F51 is often used in desalination equipment, where resistance to brackish water and seawater is crucial for longevity and efficiency.
We Supply Globally
We Supply Our F51 Duplex Stainless Steel to various countries like Mexico, Ireland, Oman, India, Russia, Algeria, Turkey, Bahrain, China, Trinidad & Tobago, Austria, Qatar, Ecuador, United Arab Emirates, Poland, Jordan, Libya, Philippines, Hungary, Nigeria, Bulgaria, Indonesia, Chile, Macau, Colombia, Croatia, Germany, Ghana, Argentina, South Africa, Greece, Switzerland, Hong Kong, Kuwait, France, Italy, Costa Rica, Kenya, Namibia, Azerbaijan, Japan, Venezuela, Morocco, Brazil, New Zealand, United Kingdom, Canada, Mexico, Bolivia, Romania, Iraq, Tibet, Angola, Chile, Estonia, Puerto Rico, South Korea, Nigeria, Finland, Tunisia, Slovakia, Vietnam, Egypt, Lithuania, Czech Republic, Bhutan, Peru, Zimbabwe, Ukraine, Australia, Gabon, Taiwan, Sri Lanka, Thailand, Lebanon, Kazakhstan, Belarus, Gambia, Norway, Netherlands, Bangladesh, Sweden, Pakistan, Serbia, Iran, Iran, Nepal, Spain, Poland, Yemen, United States, Singapore, Malaysia, Israel, Mongolia, Belgium, Afghanistan, Denmark, Portugal, Saudi Arabia.
We Supply Worldwide
We Supply Our F51 Duplex Stainless Steel to various cities like Toronto, Al Khobar, Chandigarh, Haryana, Perth, Algiers, Ahvaz, Ulsan, Moscow, Istanbul, Howrah, Singapore, Ho Chi Minh City, Port-of-Spain, London, Rajkot, New York, New Delhi, Nagpur, Kuwait City, Karachi, Surat, Ernakulam, Gimhae-si, Granada, Kanpur, Kolkata, Lahore, Madrid, Visakhapatnam, Secunderabad, Bangkok, Mumbai, Coimbatore, Bogota, Milan, Tehran, Ranchi, Pimpri-Chinchwad, Montreal, Colombo, Bhopal, Seoul, Edmonton, Aberdeen, Caracas, Busan, Brisbane, Sydney, Calgary, Sharjah, Rio de Janeiro, Chennai, Chiyoda, Geoje-si, Jakarta, Thiruvananthapuram, Courbevoie, Riyadh, Indore, Jeddah, Hyderabad, Kuala Lumpur, Baroda, Ankara, Mexico City, Dubai, Gurgaon, Vung Tau, Lagos, Al Jubail, Melbourne, Los Angeles, Petaling Jaya, Bengaluru, Atyrau, Jamshedpur, Santiago, Hanoi, Thane, Pune, Doha, Faridabad, Vadodara, La Victoria, Muscat, Ludhiana, Jaipur, Navi Mumbai, Houston, Ahmedabad, Dammam, Manama, Nashik, Cairo, Abu Dhabi, Hong Kong, Dallas, Noida.
