DIPTI METAL INDUSTRIES
ASTM A182 F904L Forged Stainless Steel Flanges: Largest Global F904L Manufacturer in Mumbai, India, F904L Supplier & F904L Exporter
Dipti Metal Industries is your premier worldwide ASTM A182 F904L Flange Manufacturer in Mumbai, India, Global A182 F904L Supplier, Dealer, and Top A182 F904L Stockist and Exporter from India. ASTM A182 F904L is a high-alloy super-austenitic stainless steel engineered for exceptional resistance to strong reducing acids, especially sulfuric and phosphoric acids. With its high Nickel (25%) and Copper (1.5%) content, it surpasses 316L in severe chemical processing and saline environments. We manufacture a comprehensive range of F904L Slip On Flanges, F904L Weld Neck Flanges, F904L Blind Flanges, and F904L Socket Weld Flanges. Available in sizes 1/2″ to 48″, pressure ratings from Class 150 to 2500. As a leading F904L Flange Manufacturer in Mumbai, we ensure peak corrosion resistance and 100% material compliance for the world’s most aggressive chemical zones.
Dipti Metal Industries: Expertise in Super Austenitic ASTM A182 F904L Forged Flanges
Dipti Metal Industries stands as the largest global ASTM A182 F904L Manufacturer in Mumbai, India. ASTM A182 F904L (UNS N08904) is a non-stabilized super-austenitic stainless steel with low carbon content. While standard grades like 316L provide good chloride resistance, F904L is specifically designed to handle severe acidic conditions. The defining feature of our ASTM A182 F904L Forged Flanges is the addition of Copper, which, combined with high levels of Nickel and Chromium, provides unparalleled resistance to warm sulfuric acid and other reducing media.
We maintain a significant inventory as the leading F904L Flange Stockist in India, supporting global projects in fertilizer production and chemical refining. Our forging process ensures a homogeneous grain structure and eliminates porosity, which is vital for preventing Stress Corrosion Cracking (SCC) in high-salinity solutions. Whether your project requires F904L Slip On (SORF) flanges or high-pressure F904L Weld Neck (WNRF) flanges for seawater cooling systems, our Mumbai-based facility produces parts that meet rigorous ASME B16.5 and B16.47 specifications. As a global F904L Exporter from India, we provide full EN 10204 3.1 certification, confirming the 25% Nickel and 4.5% Molybdenum chemistry required for super-austenitic integrity.
Need a high-alloy grade for extreme offshore pitting resistance? Explore our ASTM A182 F44 (6% Moly) Flanges or for general marine service, see F316L Flanges.
ASTM A182 F904L Flange Standards & Design Codes
| Specification | Material Grade | Available Types | Pressure Ratings |
|---|---|---|---|
| ASME B16.5 | F904L / UNS N08904 | WN, SO, BL, SW, LJ, Threaded | Class 150 to 2500 |
| ASME B16.47 | F904L / UNS N08904 | Series A (MSS SP-44) & B | Class 75 to 900 |
| EN 1092-1 | 1.4539 | Type 01, 05, 11, 12, 13 | PN 6 to PN 160 |
| JIS B2220 | SUS 904L | SOP, SOH, BL | 10K to 30K |
| DIN 2527 / 2633 | 1.4539 | Blind, Weld Neck | Up to PN 400 |
F904L Technical Specifications & Material Characteristics
Chemical Composition (F904L)
- Nickel (Ni): 23.0 - 28.0% (High Ni)
- Chromium (Cr): 19.0 - 23.0%
- Molybdenum (Mo): 4.0 - 5.0%
- Copper (Cu): 1.0 - 2.0% (Acid resistance)
- Carbon (C): 0.020% Max
Mechanical Properties
- Tensile Strength: 490 MPa (Min)
- Yield Strength: 220 MPa (Min)
- Elongation: 35% (Min)
- Hardness (HBW): 192 Max
- PREN Value: ~34 - 36
Industrial Applications of ASTM A182 F904L Flanges
Super austenitic chemistry and Copper addition make Dipti Metal's F904L flanges essential for these aggressive media:
- Sulfuric Acid Production & Storage
- Phosphoric Acid Fertilizer Plants
- Seawater Cooling Equipment
- Oil Refinery Desalting Systems
- Pulp & Paper Bleaching Filters
- Chemical Tanker Cargo Piping
- Acetic Acid Distillation Units
- Pharmaceutical Processing Vessels
Our Global Reach: Serving Countries Worldwide
DIPTI Metal Industries is a truly global exporter, proudly supplying certified industrial piping materials, fasteners, gaskets, and valves to a vast network of clients across every continent. Our extensive logistics capabilities ensure reliable and on-time delivery to major industrial hubs and ports around the world.
- India: Mumbai, Delhi, Chennai, Kolkata, Bangalore, Hyderabad
- UAE: Dubai, Abu Dhabi, Sharjah, Jebel Ali
- Saudi Arabia: Riyadh, Jeddah, Dammam, Jubail
- Qatar: Doha, Ras Laffan
- Oman: Muscat, Sohar, Salalah
- Kuwait: Kuwait City, Ahmadi
- Bahrain: Manama, Sitra
- Iraq: Baghdad, Basra, Erbil
- Iran: Tehran, Bandar Abbas, Isfahan
- Singapore: Singapore City
- Malaysia: Kuala Lumpur, Port Klang, Johor Bahru
- Indonesia: Jakarta, Surabaya, Balikpapan
- Thailand: Bangkok, Rayong, Laem Chabang
- Vietnam: Ho Chi Minh City, Hanoi, Haiphong
- Philippines: Manila, Cebu, Davao
- China: Shanghai, Beijing, Guangzhou, Tianjin, Qingdao
- Japan: Tokyo, Osaka, Nagoya, Yokohama
- South Korea: Seoul, Busan, Ulsan, Incheon
- Bangladesh: Dhaka, Chittagong
- Sri Lanka: Colombo, Kandy
- Myanmar: Yangon, Mandalay
- Kazakhstan: Nur-Sultan, Almaty, Atyrau
- Uzbekistan: Tashkent, Samarkand
- Turkmenistan: Ashgabat, Turkmenbashi
- Azerbaijan: Baku, Ganja
- Jordan: Amman, Aqaba
- Lebanon: Beirut, Tripoli
- Syria: Damascus, Aleppo (subject to trade regulations)
- Yemen: Sana'a, Aden (subject to trade regulations)
- Mongolia: Ulaanbaatar
- Nepal: Kathmandu
- Cambodia: Phnom Penh
- Laos: Vientiane
- Brunei: Bandar Seri Begawan
- Taiwan: Taipei, Kaohsiung
- Germany: Frankfurt, Hamburg, Munich, Düsseldorf, Berlin
- United Kingdom: London, Aberdeen, Manchester, Glasgow, Liverpool
- Netherlands: Rotterdam, Amsterdam, The Hague
- France: Paris, Marseille, Lyon, Le Havre, Bordeaux
- Italy: Milan, Rome, Genoa, Venice, Naples
- Spain: Madrid, Barcelona, Valencia, Bilbao
- Russia: Moscow, Saint Petersburg, Kazan, Novorossiysk
- Poland: Warsaw, Krakow, Gdansk
- Belgium: Antwerp, Brussels, Ghent
- Sweden: Stockholm, Gothenburg, Malmö
- Norway: Oslo, Bergen, Stavanger, Trondheim
- Finland: Helsinki, Tampere, Turku
- Denmark: Copenhagen, Aarhus, Odense
- Portugal: Lisbon, Porto, Sines
- Greece: Athens, Thessaloniki, Patras
- Turkey: Istanbul, Ankara, Izmir
- Switzerland: Zurich, Geneva, Basel
- Austria: Vienna, Salzburg, Linz
- Ireland: Dublin, Cork
- Czech Republic: Prague, Brno
- Romania: Bucharest, Constanta
- Ukraine: Kyiv, Odesa (subject to current events)
- Hungary: Budapest, Debrecen
- Croatia: Zagreb, Split
- Serbia: Belgrade, Novi Sad
- Bulgaria: Sofia, Varna
- Slovakia: Bratislava, Kosice
- Lithuania: Vilnius, Kaunas
- Latvia: Riga, Liepāja
- Estonia: Tallinn, Tartu
- Slovenia: Ljubljana, Maribor
- Cyprus: Nicosia, Limassol
- Malta: Valletta, Birkirkara
- Iceland: Reykjavik
- Luxembourg: Luxembourg City
- Belarus: Minsk, Gomel (subject to trade regulations)
- Bosnia and Herzegovina: Sarajevo
- North Macedonia: Skopje
- Albania: Tirana, Durres
- Moldova: Chisinau
- Montenegro: Podgorica
- Kosovo: Pristina
- USA: Houston, Los Angeles, New York, Chicago, New Orleans, Philadelphia
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal, Halifax
- Mexico: Mexico City, Monterrey, Guadalajara, Veracruz, Ciudad del Carmen
- Panama: Panama City, Colón
- Trinidad & Tobago: Port of Spain, San Fernando
- Costa Rica: San José, Puerto Limón
- Guatemala: Guatemala City, Puerto Quetzal
- Honduras: Tegucigalpa, Puerto Cortés
- Nicaragua: Managua, Corinto
- El Salvador: San Salvador, Acajutla
- Jamaica: Kingston, Montego Bay
- Dominican Republic: Santo Domingo, Santiago
- Cuba: Havana, Santiago de Cuba (subject to trade regulations)
- Bahamas: Nassau, Freeport
- Barbados: Bridgetown
- Puerto Rico: San Juan
- Belize: Belize City
- Brazil: São Paulo, Rio de Janeiro, Salvador, Curitiba, Santos
- Argentina: Buenos Aires, Cordoba, Rosario, Bahia Blanca
- Chile: Santiago, Valparaíso, Concepción, Antofagasta
- Colombia: Bogotá, Medellín, Cartagena, Barranquilla
- Peru: Lima, Callao, Arequipa, Trujillo
- Venezuela: Caracas, Maracaibo, Puerto La Cruz (subject to trade regulations)
- Ecuador: Quito, Guayaquil, Manta
- Bolivia: La Paz, Santa Cruz, Cochabamba
- Uruguay: Montevideo, Salto
- Paraguay: Asunción, Ciudad del Este
- Guyana: Georgetown
- Suriname: Paramaribo
- French Guiana: Cayenne
- South Africa: Johannesburg, Durban, Cape Town, Sasolburg
- Nigeria: Lagos, Port Harcourt, Abuja, Kano
- Egypt: Cairo, Alexandria, Port Said, Suez
- Algeria: Algiers, Oran, Skikda
- Morocco: Casablanca, Rabat, Tangier
- Angola: Luanda, Lobito
- Kenya: Nairobi, Mombasa
- Tanzania: Dar es Salaam, Mwanza
- Ghana: Accra, Tema, Kumasi
- Mozambique: Maputo, Beira
- Cameroon: Douala, Yaoundé
- Libya: Tripoli, Benghazi (subject to current events)
- Tunisia: Tunis, Sfax
- Ethiopia: Addis Ababa, Dire Dawa
- Côte d'Ivoire: Abidjan
- Senegal: Dakar
- Zambia: Lusaka, Ndola
- Zimbabwe: Harare, Bulawayo
- DR Congo: Kinshasa, Lubumbashi
- Sudan: Khartoum, Port Sudan (subject to current events)
- Uganda: Kampala, Entebbe
- Gabon: Libreville, Port-Gentil
- Mauritius: Port Louis
- Reunion: Saint-Denis
- Djibouti: Djibouti City
- Eritrea: Asmara, Massawa
- Somalia: Mogadishu (subject to current events)
- Australia: Sydney, Melbourne, Perth, Brisbane, Adelaide, Darwin
- New Zealand: Auckland, Wellington, Christchurch
- Papua New Guinea: Port Moresby, Lae
- Fiji: Suva, Nadi
- New Caledonia: Nouméa
- Solomon Islands: Honiara
- Vanuatu: Port Vila
- Samoa: Apia
- Tonga: Nukuʻalofa
- Kiribati: South Tarawa
- Micronesia: Palikir
- Marshall Islands: Majuro
- Palau: Ngerulmud
- Tuvalu: Funafuti
- Nauru: Yaren
ASTM A182 F904L Global Customer Ratings
Based on 156 Verified Global Reviews
Acid Reliability
F904L flanges showed exceptional performance in our 40% sulfuric acid environment.
Alloy Precision
Strict adherence to 25% Nickel / 1.5% Copper verified for every export batch by PMI.
"Supplied high-integrity F904L weld neck flanges for our fertilizer plant in India. Zero corrosion at joint sections after 12 months."
"Best F904L exporter from Mumbai. The super austenitic flanges for our chemical tanker in France were delivered with impeccable documentation."
Why Choose Dipti Metal Industries for F904L Flanges?
- Largest Global F904L Manufacturer in Mumbai: Unrivaled stock and manufacturing for super austenitic grades.
- Reducing Acid Expertise: Guaranteed Copper and Nickel content for maximum sulfuric acid resistance.
- Precision Forged Quality: Refined grain structure to prevent stress corrosion cracking (SCC).
- Full Traceability: Mill Test Certificates (EN 10204 3.1) and NACE MR0175 compliance provided.
- Seaworthy Packaging: Specialized protective bagging and reinforced export crates for global transit.
Request a Quote for ASTM A182 F904L Flanges
F904L Flanges — Frequently Asked Questions
The addition of 1.0% to 2.0% Copper significantly improves the material's resistance to strong reducing acids, particularly sulfuric acid. This makes it far superior to standard molybdenum-only grades like 316L or 317L in fertilizer and chemical processing plants.
ASTM A182 F904L has an extra-low carbon content (max 0.02%), which minimizes the risk of sensitization (carbide precipitation) during welding. Therefore, post-weld heat treatment is generally not required to maintain corrosion resistance in the heat-affected zone.
Yes, F904L has high levels of Chromium and Molybdenum, giving it a high PREN (Pitting Resistance Equivalent Number) of approximately 35. It is excellent for warm seawater and desalination units where standard stainless steels might suffer from pitting or crevice corrosion.
Contact Dipti Metal Industries — Your F904L Flange Manufacturer
Super austenitic export specialists: Mill-certified F904L components • Acid-proof packaging • Global project logistics. We are a premier manufacturer in Mumbai, India.