DIPTI METAL INDUSTRIES
ASTM A351 CN3MN Cast Stainless Steel Valves: Largest Global ASTM A351 CN3MN Manufacturer in Mumbai, India, CN3MN Supplier & CN3MN Exporter
Dipti Metal Industries – Your Premier Worldwide ASTM A351 CN3MN Manufacturer in Mumbai, India, Global A351 CN3MN Supplier, A351 CN3MN Dealers, A351 CN3MN Distributors, and Top A351 CN3MN Stockists and A351 CN3MN Exporter from India of High-Quality ASTM A351 CN3MN (Cast AL-6XN) Super Austenitic Stainless Steel Valves. This highly-alloyed grade (6.0-7.0% Molybdenum, 23.5-25.5% Nickel, plus Nitrogen) provides exceptional resistance to pitting, crevice corrosion, and superior resistance to chloride stress corrosion cracking (SCC) compared to CK3MCuN. We offer the biggest and most comprehensive range, including CN3MN Ball Valves (API 6D/API 608), CN3MN Gate Valves (API 600), and CN3MN Check Valves (API 594). Available in a vast size range (NPS 1/2″ – 36″), and pressure classes (ASME Class 150-1500, PN 10-250) for the most extreme industrial service, such as hot seawater and concentrated halide solutions. As an A351 CN3MN Valve Manufacturer in Mumbai and global leader, we ensure exceptional quality and material compliance from Mumbai, India.
Introduction to Dipti Metal Industries' Expertise in ASTM A351 CN3MN Valves
Dipti Metal Industries proudly stands as the largest global ASTM A351 CN3MN Manufacturer in Mumbai, India, a premier A351 CN3MN supplier in India, A351 CN3MN stockist, A351 CN3MN dealer, A351 CN3MN distributor, and leading A351 CN3MN exporter from India of Cast Super Austenitic Stainless Steel Valves. CN3MN is the cast equivalent of Wrought AL-6XN, representing the pinnacle of commercially available high-performance austenitic alloys. It is superior to 254-SMO (CK3MCuN) primarily due to its significantly higher Nickel content (23.5-25.5% vs 17.5-19.5%), which imparts excellent resistance to chloride stress corrosion cracking (SCC). Like other super austenitics, its Pitting Resistance Equivalent Number (PREN) exceeds 40, achieved through the high levels of Chromium, Molybdenum (6.0-7.0%), and Nitrogen. As a low-carbon alloy (max 0.03%), it is also inherently weld-safe.
We specialize in the manufacturing and supply of the entire ASTM A351 CN3MN valve lineup, including Ball Valves (API 6D/API 608), Gate Valves (API 600), and Check Valves (API 594). CN3MN is engineered for applications where both superior pitting/crevice resistance and maximum resistance to stress corrosion cracking are absolutely essential. Our valves consistently adhere to international standards, primarily ASME B16.34. Our inventory makes us the biggest A351 CN3MN Stockist in India, ensuring prompt delivery to global FGD, chemical, and offshore projects. Dipti Metal is your trusted A351 CN3MN Valve Supplier in Mumbai for the world's most corrosive industrial fluid control challenges.
NOTE: For applications with operating temperatures exceeding 400°C (752°F), where precipitation of intermetallic phases is a concern, Nickel-based alloys such as ASTM A494 CW6MC (Hastelloy C276) Valves should be considered.
ASTM A351 CN3MN Valve Standards, Design & Testing Codes
Dipti Metal Industries ensures all supplied ASTM A351 CN3MN Valves comply with critical international standards for design, manufacturing, dimensions, and testing specific to Super Austenitic Stainless Steel for extreme corrosive service.
| Standard | Scope / Valve Type | Material & Rating | Key Requirement |
|---|---|---|---|
| Gate Valves API 600 | Steel Gate Valves—Flanged and Butt-welding Ends | ASTM A351 CN3MN | Design, Pressure/Temperature Ratings, NDE for Gate Valves. |
| Globe Valves API 623 | Steel Globe Valves—Flanged and Butt-welding Ends | ASTM A351 CN3MN | Design, P/T Ratings, and Testing for Globe Valves. |
| Check Valves API 594 | Check Valves—Flanged, Lug, Wafer and Butt-welding Ends | ASTM A351 CN3MN | Design and Face-to-Face dimensions for Check Valves. |
| Ball Valves API 6D / API 608 | Pipeline Valves / Metal Ball Valves | ASTM A351 CN3MN | Design and testing requirements for Ball Valves. |
| P/T Ratings ASME B16.34 | Valves—Flanged, Threaded, and Welding End | ASTM A351 CN3MN | Pressure-Temperature ratings and minimum wall thickness criteria for Super Austenitic SS. |
| Testing API 598 | Valve Inspection and Testing | All CN3MN Valves | Hydrostatic and Pneumatic shell/seat test requirements. |
| Corrosion Control | ASTM G48 (Method A or B) | ASTM A351 CN3MN | Pitting/Crevice corrosion test (often required for this grade). |
Notes: As a leading ASTM A351 CN3MN Manufacturer, we provide full EN 10204 3.1 or 3.2 certification. We implement strict compositional control on Molybdenum and Nitrogen to ensure optimal PREN & SCC resistance.
ASTM A351 CN3MN Product Range, Pressure Ratings & End Connections
Our ASTM A351 CN3MN Valves are engineered for the most demanding applications requiring the highest level of corrosion resistance, particularly against chlorides and stress corrosion cracking. We are the biggest CN3MN Valve Stockist in Mumbai for this premium service range.
- Size Range (NPS / DN): From 1/2″ (DN15) up to 36″ (DN900), customized for the specific needs of extreme chemical processes.
- Pressure Classes (ASME / PN):
- Common Classes: ASME Class 150 LB, 300 LB, 600 LB (PN 10 to PN 100)
- Higher Pressure (on request): ASME Class 900 LB, 1500 LB (PN 150 to PN 250)
- Key Valve Types Manufactured in CN3MN:
- CN3MN Ball Valves: Floating and Trunnion Mounted (Ideal for flow control in severe media).
- CN3MN Gate Valves (Isolation): OS&Y, Bolted Bonnet (BB).
- CN3MN Globe Valves (Regulation): Y-Pattern, Angle Pattern.
- CN3MN Check Valves (Backflow): Swing Type, Wafer Type.
- End Connection Types (Conforming to ASME B16.5 / B16.25):
- Flanged: Raised Face (RF), Ring Type Joint (RTJ)
- Welding: Butt-Weld (BW) Ends, Socket-Weld (SW) Ends (Weld-safe due to low carbon).
- Threaded: NPT/BSP (for smaller sizes)
CN3MN (AL-6XN) offers a crucial performance advantage over 254-SMO (CK3MCuN) in applications prone to Chloride Stress Corrosion Cracking (SCC) due to its higher Nickel content, making it a truly specialized and premium alloy.
Applications of ASTM A351 CN3MN Cast Stainless Steel Valves
ASTM A351 CN3MN Valves are used when the ultimate performance from an austenitic stainless steel is required, typically in media with high halide concentrations, high temperatures, and high risk of both pitting and stress corrosion cracking.
- Flue Gas Desulfurization (FGD) Scrubber Systems: Liners, dampers, and piping handling acidic slurries and aggressive chemicals in environmental control systems.
- Chemical Reactors & Process Vessels: Handling concentrated and contaminated phosphoric acid, sulfuric acid, and other highly aggressive industrial media.
- Offshore & Marine Service: Hot seawater applications (e.g., heat exchangers, cooling systems) where even 254-SMO is marginally inadequate.
- Pulp & Paper Bleaching: Equipment in the aggressive bleaching sections (using chlorine dioxide).
ASTM A351 CN3MN Valve Export Countries & Cities We Supply From India To
Dipti Metal Industries is a proud Worldwide Exporter of ASTM A351 CN3MN Valves from Mumbai, India, Global Supplier, Dealer, and Stockist of Cast Super Austenitic Stainless Steel Valves, with an extensive network. We ensure timely and compliant delivery to major industrial hubs across over 190 countries globally, making us one of the biggest global dealers in this domain.
Explore Our ASTM A351 CN3MN Global Reach (190+ Countries)
- USA: Houston, Los Angeles, New York, Chicago, New Orleans
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal
- Mexico: Mexico City, Monterrey, Guadalajara, Veracruz
- Panama: Panama City, Colón
- Trinidad and Tobago: Port of Spain, San Fernando
- Costa Rica: San José, Puerto Limón
- Guatemala: Guatemala City, Puerto Quetzal
- Honduras: Tegucigalpa, San Pedro Sula
- Nicaragua: Managua, Corinto
- El Salvador: San Salvador, Acajutla
- Jamaica: Kingston, Montego Bay
- Dominican Republic: Santo Domingo, Santiago
- Cuba: Havana, Santiago de Cuba
- Bahamas: Nassau, Freeport
- Barbados: Bridgetown
- Haiti: Port-au-Prince
- Puerto Rico: San Juan
- Belize: Belize City
- Brazil: São Paulo, Rio de Janeiro, Salvador, Curitiba
- Argentina: Buenos Aires, Cordoba, Rosario
- Chile: Santiago, Valparaíso, Concepción, Antofagasta
- Colombia: Bogotá, Medellín, Cartagena, Barranquilla
- Peru: Lima, Callao, Arequipa, Trujillo
- Venezuela: Caracas, Maracaibo, Puerto La Cruz, Valencia
- Ecuador: Quito, Guayaquil, Manta, Esmeraldas
- Bolivia: La Paz, Santa Cruz, Cochabamba
- Uruguay: Montevideo, Salto
- Paraguay: Asunción, Ciudad del Este
- Guyana: Georgetown
- Suriname: Paramaribo
- Germany: Frankfurt, Hamburg, Munich, Düsseldorf, Berlin
- United Kingdom: London, Manchester, Aberdeen, 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, Seville
- Russia: Moscow, Saint Petersburg, Kazan, Novorossiysk, Sochi
- Poland: Warsaw, Krakow, Gdańsk, Wrocław
- Belgium: Antwerp, Brussels, Ghent, Zeebrugge
- Sweden: Stockholm, Gothenburg, Malmö, Uppsala
- Norway: Oslo, Bergen, Stavanger, Trondheim
- Finland: Helsinki, Tampere, Turku, Oulu
- Turkey: Istanbul, Ankara, Izmir, Adana
- Portugal: Lisbon, Porto, Sines
- Greece: Athens, Thessaloniki, Patras
- Ireland: Dublin, Cork
- Austria: Vienna, Salzburg, Linz
- Switzerland: Zurich, Geneva, Basel, Bern
- Czech Republic: Prague, Brno, Ostrava
- Romania: Bucharest, Cluj-Napoca, Constanța
- Ukraine: Kyiv, Kharkiv, Odesa, Lviv
- Hungary: Budapest, Debrecen, Szeged
- Croatia: Zagreb, Split, Rijeka
- Denmark: Copenhagen, Aarhus, Odense
- Slovakia: Bratislava, Košice, Žilina
- Lithuania: Vilnius, Kaunas, Klaipėda
- Latvia: Riga, Daugavpils, Liepāja
- Estonia: Tallinn, Tartu, Narva
- Bulgaria: Sofia, Plovdiv, Varna
- Serbia: Belgrade, Novi Sad
- Slovenia: Ljubljana, Maribor
- Cyprus: Nicosia, Limassol
- Malta: Valletta, Birkirkara
- Saudi Arabia: Riyadh, Jeddah, Dammam, Al Khobar, Jubail
- UAE: Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah
- Qatar: Doha, Ras Laffan
- Oman: Muscat, Sohar, Salalah
- Kuwait: Kuwait City, Ahmadi
- Bahrain: Manama, Sitra
- Iraq: Baghdad, Basra, Erbil
- Iran: Tehran, Mashhad, Bandar Abbas, Isfahan
- India: Mumbai, Delhi, Chennai, Kolkata, Bangalore, Hyderabad (Local Markets)
- China: Shanghai, Guangzhou, Tianjin, Shenzhen, Qingdao, Hong Kong
- Japan: Tokyo, Osaka, Nagoya, Yokohama, Kobe
- South Korea: Seoul, Busan, Ulsan, Incheon, Daegu
- Indonesia: Jakarta, Surabaya, Balikpapan, Medan
- Singapore: Singapore City
- Malaysia: Kuala Lumpur, Johor Bahru, Port Klang, Penang
- Thailand: Bangkok, Rayong, Laem Chabang, Chiang Mai
- Vietnam: Ho Chi Minh City, Hanoi, Da Nang, Haiphong
- Philippines: Manila, Cebu, Davao, Batangas
- Bangladesh: Dhaka, Chittagong, Khulna
- Pakistan: Karachi, Lahore, Islamabad, Faisalabad
- Taiwan: Taipei, Kaohsiung, Taichung
- Myanmar: Yangon, Mandalay
- Sri Lanka: Colombo, Kandy
- Kazakhstan: Nur-Sultan, Almaty, Atyrau
- Uzbekistan: Tashkent, Samarkand, Bukhara
- Jordan: Amman, Irbid, Zarqa
- Lebanon: Beirut, Tripoli
- Mongolia: Ulaanbaatar, Erdenet
- Nepal: Kathmandu, Biratnagar
- Yemen: Sana'a, Aden
- 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
- Tunisia: Tunis, Sfax
- Ethiopia: Addis Ababa, Dire Dawa
- Australia: Sydney, Melbourne, Perth, Brisbane, Darwin, Adelaide
- New Zealand: Auckland, Wellington, Christchurch
- Papua New Guinea: Port Moresby, Lae
- Fiji: Suva, Nadi
- Zambia: Lusaka, Ndola
- Zimbabwe: Harare, Bulawayo
- Namibia: Windhoek, Walvis Bay
- Democratic Republic of Congo: Kinshasa, Lubumbashi
- Cote d'Ivoire: Abidjan
- Senegal: Dakar
- Mali: Bamako
- Malawi: Lilongwe, Blantyre
- Mauritius: Port Louis
- Reunion: Saint-Denis
Why Choose Dipti Metal Industries for Your ASTM A351 CN3MN Valve Needs?
- Largest A351 CN3MN Stockist & Manufacturer: As the largest global ASTM A351 CN3MN Manufacturer in Mumbai and biggest A351 CN3MN stockist in India, we provide unparalleled access to a full range of Super Austenitic (AL-6XN) valves, ensuring minimal lead times for urgent project requirements in extreme service.
- Maximum Corrosion Performance (PREN > 40): We supply certified Cast AL-6XN (CN3MN) Valves with high Molybdenum (6-7%), Nitrogen, and Copper, guaranteeing exceptional resistance to pitting, crevice corrosion, and superior resistance to Chloride Stress Corrosion Cracking (SCC) due to its high Nickel content. Fully supported by EN 10204 3.1/3.2 MTCs.
- Low Carbon (Weld-Safe) Design: The low carbon content (max 0.03%) makes CN3MN inherently resistant to intergranular corrosion after welding, combining top-tier chemical resistance with excellent field weldability without the need for post-weld solution annealing.
- Superior Nickel Content for SCC: The high Nickel (23.5-25.5%) differentiates CN3MN, making it the most reliable Super Austenitic for environments known to cause stress corrosion cracking.
- Robust Worldwide Exporter & Logistics: As a dedicated worldwide A351 CN3MN Exporter from Mumbai, Dipti Metal Industries guarantees efficient, fully documented, and compact global delivery, ensuring smooth project completion across all industrial continents.
- Best Value Proposition: Leveraging strategic global manufacturing in India and efficient supply chain management, we deliver premium, fully certified ASTM A351 CN3MN Valves at highly competitive prices, offering the best cost-to-performance ratio for Super Austenitic applications.
Get a Quote Today for Your ASTM A351 CN3MN Valve Requirements!
Are you searching for dependable, extreme corrosion-resistant ASTM A351 CN3MN Cast Stainless Steel Valves that comply with international standards for your severe offshore, FGD, or chemical reactor service needs? Contact Dipti Metal Industries, your expert largest global ASTM A351 CN3MN Manufacturer in Mumbai, India, supplier, stockist, dealer, distributor, and exporter from India, today to discuss your specific requirements or to request a personalized, custom quote. Our knowledgeable and responsive team is dedicated to providing you with the most effective, safest, and most reliable A351 CN3MN Valve solutions.
Price guidance (non-binding): USD 50.00–1,800,000.00 per unit depending on size, pressure class, type, trim, quantity, and delivery terms. Final prices are quotation-based.
ASTM A351 CN3MN Valves — Frequently Asked Questions
CN3MN (Cast AL-6XN) has a higher Nickel content (23.5-25.5%) and a controlled Molybdenum (6-7%) and Nitrogen content. The high Nickel provides maximum resistance to chloride stress corrosion cracking, while the high Moly/Nitrogen maintains a Pitting Resistance Equivalent Number (PREN) above 40, essential for critical halide and hot seawater applications.
The 'CN3MN' is a Super Austenitic casting designation: 'C' denotes Corrosion-resistant service, 'N' denotes high Nickel, '3' is for low carbon (L-grade, max 0.03%), 'M' for Molybdenum, and 'N' for Nitrogen. It is the cast version of the AL-6XN alloy.
CN3MN valves are specifically designed for extremely aggressive chloride and halide media, such as hot seawater service (above 60°C/140°F), Flue Gas Desulfurization (FGD) systems, and aggressive pharmaceutical and chemical reactors.
Yes, CN3MN (AL-6XN) is also a Super Austenitic alloy, and like CK3MCuN (254-SMO), it is typically limited to service temperatures of 400°C (752°F) or less due to the risk of detrimental intermetallic (Sigma) phase precipitation, which severely degrades mechanical and corrosion properties.
Contact Dipti Metal Industries, Your ASTM A351 CN3MN Valve Manufacturer, Exporter, Supplier in Mumbai, India
Global export expertise: Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI. We are a worldwide exporter of quality ASTM A351 CN3MN Valves from Mumbai, India.