Labh Steel is a renowned manufacturer, stockist, and exporter of F51 Duplex Stainless Steel Flanges. These flanges are made from high-quality F51 Duplex Stainless Steel (UNS S31803 / UNS S32205) and conform to ASTM A182 standards. Known for their excellent mechanical strength and corrosion resistance, F51 flanges are suitable for applications in harsh environments, such as offshore platforms, chemical processing, and marine industries.
Our wide range of F51 Duplex Stainless Steel Flanges includes Slip-On, Weld Neck, Blind, Socket Weld, Threaded, Lap Joint, and Custom Flanges. They are designed to withstand high pressure and temperature conditions, offering superior performance and reliability. We provide flanges in various sizes, pressure classes, and specifications to meet the unique requirements of our clients.
Grade : | S31803 / Duplex Steel F51 |
Designations : | ASTM A182 |
Size : | 1/8" NB TO 24" NB. |
Standard : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
Class : | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
Duplex Steel | Tradename | UNS no. | Werkstoff No. |
F51 | F51 Duplex Steel | S31803 | 1.4462 |
Element | Content (%) |
Iron, Fe | Balance |
Chromium, Cr | 21.0 - 23.0 |
Nickel, Ni | 4.5 - 6.5 |
Molybdenum, Mo | 2.5 - 3.5 |
Nitrogen, N | 0.08 - 0.20 |
Carbon, C | ≤ 0.030 |
Manganese, Mn | ≤ 2.00 |
Silicon, Si | ≤ 1.00 |
Phosphorus, P | ≤ 0.030 |
Sulfur, S | ≤ 0.020 |
Properties | Metric | Imperial |
Tensile Strength | ≥ 620 MPa | ≥ 90000 psi |
Yield Strength (0.2% Proof) | ≥ 450 MPa | ≥ 65000 psi |
Elongation at Break | ≥ 25 % | ≥ 25 % |
Modulus of Elasticity | 200 GPa | 29000 ksi |
Shear Modulus | 75.0 GPa | 10900 ksi |
Poisson's Ratio | 0.33 | 0.33 |
Hardness, Rockwell C | ≤ 31.0 | ≤ 31.0 |
Hardness, Brinell | 293 max | 293 max |
Labh Steel Supplies Duplex Steel F51 Flanges in Agartala, Agra, Agra Rampur, Ahmedabad, Aizawl, Ajmer, Aligarh, Allahabad, Alwar, Amaravati, Ambala, Ambattur, Ambernath, Amravati, Amritsar, Aurangabad, Bangalore, Bareilly, Belgaum, Bhagalpur, Bhavnagar, Bhilai, Bhiwandi, Bhopal, Bhubaneswar, Bidhannagar, Biharsharif, Bikaner, Bilaspur, Bokaro, Chandigarh, Chennai, Chittoor, Coimbatore, Cuttack, Dahod, Davanegere, Dehradun, Delhi, Dhanbad, Dharamsala, Dindigul, Diu, Durgapur, Erode, Faridabad, Fatehpur, Gandhidham, Gandhinagar, Ghaziabad, Greater Hyderabad, Greater Mumbai, Greater Warangal, Gurgaon, Guwahati, Gwalior, Haldia, Howrah, Hubballi-Dharwad, Hyderabad, Imphal, Indore, Jabalpur, Jaipur, Jalandhar, Jammu, Jamnagar, Jamshedpur, Jhansi, Jodhpur, Junagadh, Kakinada, Kalyan-Dombivali, Kanpur, Karnal, Kavaratti, Kochi, Kohima, Kolhapur, Kolkata, Kota, Lucknow, Ludhiana, Madurai, Mehsana, Mangalore, Mangaluru, Mira-Bhayandar, Moradabad, Morbi, Mumbai, Muzaffarpur, Mysore, Nagpur, Namchi, Nasik, Navi Mumbai, NDMC, Nellore, New Delhi, New Town Kolkata, Noida, Oulgaret, Pali, Panaji, Panipat, Panvel, Pasighat, Patiala, Patna, Pimpri-Chinchwad, Port Blair, Puducherry, Pune, Raipur, Rajkot, Ranchi, Raurkela, Industrial Township, Rourkela, Sagar, Salem, Satna, Secunderabad, Shaharanpur, Shillong, Siliguri, Silvassa, Solapur, Srinagar, Surat, Thane, Thanjavur, Thiruvananthapuram, Thoothukudi, Thrissur, Tiruchirapalli, Tirunelveli, Tirupur, Tumkur, Udaipur, Ujjain, Ulhasnagar, Vadodara, Vapi, Varanasi, Vasai-Virar, Vellore, Vishakhapatnam.
Labh Steel exports Duplex Steel F51 Flanges to Countries like India, United States, United Arab Emirates, Canada, Pakistan, Peru, Chile, Spain, France, United Kingdom, Indonesia, Israel, Iran, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Chile, Venezuela, Ecuador, Saudi Arabia, Netherlands, Brazil, Colombia, Ghana, Iran, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Poland, Qatar, Russia, Vietnam, South Africa, Nigeria, Mexico, Turkey, Hungary, Algeria, Angola, Argentina, Austria, Azerbaijan, Bangladesh, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Romania, Thailand, Trinidad & Tobago,Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia.