DIPTI METAL INDUSTRIES
ASTM A494 N7M (Hastelloy B Modified) Nickel Alloy Valves: Largest Global N7M Manufacturer in Mumbai, India, N7M Supplier & N7M Exporter
Dipti Metal Industries – Your Premier Worldwide ASTM A494 N7M Manufacturer in Mumbai, India, Global N7M Supplier, N7M Dealers, N7M Distributors, and Top N7M Stockists and N7M Exporter from India of High-Quality ASTM A494 N7M (Cast Hastelloy B Modified / UNS N30007) Nickel Alloy Valves. This specialized alloy is characterized by its exceptionally high **Molybdenum (Mo) content (30.0-33.0%)** and minimal Chromium, making it the superior choice for handling severe non-oxidizing, **reducing corrosive media**, especially at high concentrations and elevated temperatures. Its primary use is in Hydrochloric Acid (HCl), reducing Sulfuric Acid (H₂SO₄), and Phosphoric Acid service. We offer the biggest and most comprehensive range, including N7M Ball Valves, N7M Gate Valves, N7M Globe Valves, and N7M Check Valves. Available in a vast size range (NPS 1/2″ – 30″), and pressure classes (ASME Class 150-2500) for critical high-pressure and extreme corrosive service. As an A494 N7M 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 A494 N7M Valves
Dipti Metal Industries proudly stands as the largest global ASTM A494 N7M Manufacturer in Mumbai, India, a premier A494 N7M supplier in India, A494 N7M stockist, and leading A494 N7M exporter from India of Cast Nickel Alloy Valves. N7M (UNS N30007) is a high-performance, low-Chromium, high-Molybdenum alloy designed to excel in severely **reducing (non-oxidizing)** corrosive conditions, where more common alloys like Stainless Steels, Duplex, or even other Nickel Alloys (e.g., Hastelloy C-types) would rapidly corrode. The alloy is specified under ASTM A494 and represents the cast equivalent of the Hastelloy B family, tailored for superior thermal stability and corrosion performance in the most concentrated non-oxidizing acids.
The impressive resistance of N7M comes from its exceptionally high Molybdenum content (30.0-33.0% Mo), which makes it virtually immune to non-oxidizing media like boiling Hydrochloric Acid and reducing Sulfuric Acid across a wide range of concentrations and temperatures. We specialize in the manufacturing and supply of N7M Ball Valves, Gate Valves, Globe Valves, and Check Valves for critical chemical processing equipment. Our expertise ensures that these castings meet the strict chemical and mechanical requirements (min. yield strength 40 ksi) necessary for reliable, long-term service in these highly aggressive environments. Our comprehensive stock makes us the biggest A494 N7M Stockist in India, ensuring minimal downtime for critical chemical operations worldwide. Dipti Metal is your trusted A494 N7M Valve Supplier in Mumbai for the toughest reducing acid service.
NOTE: N7M is strictly intended for reducing service. Even minute contamination by oxidizing agents (e.g., ferric, cupric ions, or trace oxygen) can rapidly increase corrosion rates. Proper application consultation is mandatory for this specialized alloy.
ASTM A494 N7M Chemical Composition and Mechanical Properties
Our N7M castings adhere strictly to the ASTM A494 N7M specification, with a tightly controlled chemistry focused on maximizing Molybdenum for reducing acid resistance.
| Element | N7M (Cast Hastelloy B Mod.) Composition (%) | Element | N7M (Cast Hastelloy B Mod.) Composition (%) |
|---|---|---|---|
| Nickel (Ni) | Balance (BAL) | Carbon (C) | 0.07 max |
| Molybdenum (Mo) | 30.0–33.0 | Silicon (Si) | 1.0 max |
| Iron (Fe) | 3.0 max | Manganese (Mn) | 1.0 max |
| Chromium (Cr) | 1.0 max | Sulphur (S) | 0.02 max |
| Cobalt (Co) | 1.0 max | Phosphorus (P) | 0.04 max |
| Vanadium (V) | 0.4 max | Tungsten (W) | 0.4 max |
N7M Mechanical Properties (ASTM A494)
| Property | Metric (Min) | Imperial (Min) |
|---|---|---|
| Tensile Strength, min. | 525 MPa | 76 ksi |
| Yield Strength (0.2% Offset), min. | 275 MPa | 40 ksi |
| Elongation in 2 in. (50mm), min. | 20% | 20% |
ASTM A494 N7M Valve Standards, Design & Testing Codes
Dipti Metal Industries ensures all supplied ASTM A494 N7M Valves comply with critical international standards for design, manufacturing, dimensions, and testing specific to Nickel Alloys for extreme reducing acid service.
| Standard | Scope / Valve Type | Material & Rating | Key Requirement |
|---|---|---|---|
| Gate Valves API 600 | Steel Gate Valves—Flanged and Butt-welding Ends | ASTM A494 N7M | Design, Pressure/Temperature Ratings, NDE for Gate Valves. |
| Globe Valves API 623 | Steel Globe Valves—Flanged and Butt-welding Ends | ASTM A494 N7M | Design, P/T Ratings, and Testing for Globe Valves. |
| Check Valves API 594 | Check Valves—Flanged, Lug, Wafer and Butt-welding Ends | ASTM A494 N7M | Design and Face-to-Face dimensions for Check Valves. |
| Ball Valves API 6D / API 608 | Pipeline Valves / Metal Ball Valves | ASTM A494 N7M | Design and testing requirements for Ball Valves. |
| P/T Ratings ASME B16.34 | Valves—Flanged, Threaded, and Welding End | ASTM A494 N7M | Pressure-Temperature ratings and minimum wall thickness criteria for Nickel Alloys. |
| Testing API 598 | Valve Inspection and Testing | All N7M Valves | Hydrostatic and Pneumatic shell/seat test requirements. |
| Material Spec | ASTM A494 | ASTM A494 N7M | Specific requirements for chemistry and microstructure of Nickel-Base alloy castings. |
Notes: As a leading ASTM A494 N7M Manufacturer, we provide full EN 10204 3.1 or 3.2 certification, including specialized NDE and heat treatment records to ensure optimal performance in non-oxidizing acid environments.
ASTM A494 N7M Product Range, Pressure Ratings & End Connections
Our ASTM A494 N7M (Hastelloy B Modified) Valves are engineered to deliver specialized immunity to reducing media for critical applications. We are the biggest N7M Valve Stockist in Mumbai for this Nickel Alloy range.
- Size Range (NPS / DN): From 1/2″ (DN15) up to 30″ (DN750), commonly used in chemical reactors and acid transfer lines.
- Pressure Classes (ASME / PN):
- Common Classes: ASME Class 150 LB, 300 LB, 600 LB (PN 10 to PN 100)
- High Pressure: ASME Class 900 LB, 1500 LB, 2500 LB (PN 150 to PN 420)
- Key Valve Types Manufactured in N7M:
- N7M Ball Valves: Floating and Trunnion Mounted (often with TFE or metallic seats).
- N7M Gate Valves (Isolation): OS&Y, Bolted Bonnet (BB) / Pressure Seal Bonnet (PSB).
- N7M Globe Valves (Regulation/Throttling): T-Pattern, Y-Pattern.
- N7M Check Valves (Backflow): Swing Type, Lift 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 (Specialized welding procedures for Ni-Mo alloys).
- Threaded: NPT/BSP (for instrumentation and smaller bore sizes)
The high Molybdenum Nickel-base structure ensures outstanding resistance to general and localized corrosion specifically in reducing environments.
Applications of ASTM A494 N7M Cast Nickel Alloy (Hastelloy B Modified) Valves
ASTM A494 N7M Valves are essential in the most aggressive non-oxidizing acid services, where corrosion rates must be kept exceptionally low.
- Chemical Processing: Pipelines, reactors, and vessels handling Hydrochloric Acid (HCl) in all concentrations and temperatures.
- Sulfuric Acid Service: Used in vessels and piping for concentrated reducing Sulfuric Acid (H₂SO₄), especially in environments without oxidizing impurities.
- Phosphoric Acid: Equipment exposed to various concentrations of Phosphoric Acid (H₃PO₄).
- Vinyl Chloride Monomer (VCM) Production: Critical for processes involving high-concentration Hydrochloric Acid.
ASTM A494 N7M Valve Export Countries & Cities We Supply From India To
Dipti Metal Industries is a proud Worldwide Exporter of ASTM A494 N7M Valves from Mumbai, India, Global Supplier, Dealer, and Stockist of Cast Nickel Alloy (Hastelloy B Modified) 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 A494 N7M 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 A494 N7M Valve Needs?
- Largest A494 N7M Stockist & Manufacturer: As the largest global ASTM A494 N7M Manufacturer in Mumbai and biggest N7M stockist in India, we ensure rapid access to Cast Hastelloy B Modified valves for urgent non-oxidizing acid service.
- Extreme Reducing Acid Immunity: Our N7M Valves are explicitly designed for superb resistance to concentrated Hydrochloric Acid (HCl) and reducing Sulfuric Acid (H₂SO₄) across a wide range of temperatures, due to the industry-leading Molybdenum content (30-33%).
- High Molybdenum Content: The alloy's strength lies in its high Mo concentration, making it virtually immune to non-oxidizing corrosion that would destroy many other high-performance alloys.
- Certified Quality & Stability: We supply fully compliant Cast Nickel Alloy Valves with full EN 10204 3.1/3.2 MTCs, ensuring the material meets the strict chemical and mechanical requirements necessary for handling these aggressive acids.
- Expert Nickel Alloy Casting: Our manufacturing process is optimized for exotic Nickel-Molybdenum alloys, guaranteeing superior casting integrity and metallurgy control specific to the N7M grade.
- Robust Worldwide Exporter & Logistics: As a dedicated worldwide A494 N7M Exporter from Mumbai, Dipti Metal Industries guarantees efficient, fully documented, and compact global delivery for timely project completion in the chemical industry.
Get a Quote Today for Your ASTM A494 N7M Valve Requirements!
Are you searching for dependable, high-Molybdenum, reducing acid-resistant ASTM A494 N7M Cast Nickel Alloy Valves (Hastelloy B Modified) that comply with international standards for your severe chemical process needs? Contact Dipti Metal Industries, your expert largest global ASTM A494 N7M 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 A494 N7M Valve solutions.
Price guidance (non-binding): USD 300.00–3,000,000.00 per unit depending on size, pressure class, type, trim, quantity, and delivery terms. Final prices are quotation-based.
ASTM A494 N7M Valves — Frequently Asked Questions
N7M is a high-Nickel, high-Molybdenum alloy designed almost exclusively for handling severe, non-oxidizing (reducing) corrosive environments. Its outstanding resistance to Hydrochloric Acid (HCl) and reducing Sulfuric Acid (H₂SO₄) makes it the standard choice over most other alloys for these services.
The primary element is Molybdenum (Mo), present at 30.0% to 33.0%. This extremely high Molybdenum content is what provides the alloy with its superior immunity to non-oxidizing, reducing acids like Hydrochloric Acid, especially at elevated concentrations and temperatures.
No. A key limitation of N7M and other Hastelloy B-type alloys is their poor resistance to oxidizing environments. Even trace amounts of iron or copper salts, or ferric chloride, can cause rapid failure. It is strictly limited to non-oxidizing (reducing) acid service.
ASTM A494 Grade N7M (UNS N30007) is comparable to the original Hastelloy B alloys, with modifications for improved fabrication and thermal stability (often referred to as Hastelloy B-2 or B-3 type performance in cast form). The UNS designation N30007 identifies this specific cast Nickel-Molybdenum alloy.
Contact Dipti Metal Industries, Your ASTM A494 N7M 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 A494 N7M Valves from Mumbai, India.