DIPTI METAL INDUSTRIES
DIPTIINOX® ER446LMo TIG Rod (AWS A5.9): Leading Manufacturer & Exporter of High-Performance Super-Ferritic Filler Metals
Dipti Metal Industries is a Leading ER446LMo TIG Rod Manufacturer and Super-Ferritic Stainless Steel Welding Wire Exporter in Mumbai, India, providing mission-critical AWS A5.9 ER446LMo GTAW filler metal under the DIPTIINOX® brand. ER446LMo (UNS S44626) is a low-interstitial 26Cr-1Mo alloy designed for welding super-ferritic base metals used in extreme chloride environments. This grade offers significantly better thermal conductivity and lower thermal expansion than austenitic alloys, making it the premier choice for seawater condensers and desalination components. As a specialized Stainless Steel TIG Rod ER446LMo Supplier, we ensure our filler metals deliver maximum resistance to pitting and crevice corrosion in the most aggressive industrial media globally.
DIPTIINOX® ER446LMo: The Super-Ferritic Benchmark for Chloride Environments
The AWS A5.9 ER446LMo TIG Rod is a high-purity filler metal designed for the welding of high-chromium, molybdenum-stabilized ferritic stainless steels. The chemistry is dominated by 25.0-27.0% Chromium and 0.75-1.50% Molybdenum, providing a level of resistance to chloride pitting that exceeds even Super Duplex grades in specific conditions. Unlike austenitic grades, ER446LMo is virtually immune to Stress Corrosion Cracking (SCC), a common failure mode in warm chloride environments. Dipti Metal Industries specializes in producing these rods with ultra-low carbon and nitrogen levels (low interstitials), ensuring that the weld remains ductile and maintains its integrity in high-temperature oxidation service. Our ER446LMo rods are engineered for the most demanding power generation and marine condenser tube-to-tubesheet welds.
Key Features, Benefits, and Conformances of ER446LMo TIG Rods
Key Features & Service Performance (As per Datasheet)
- Super-Ferritic Grade: 26Cr-1Mo metallurgy for extreme chloride service.
- SCC Immunity: Unmatched resistance to Stress Corrosion Cracking.
- Low Interstitials: Controlled C and N for improved weld ductility.
- Thermal Properties: Higher thermal conductivity than austenitic 300-series.
- Heat Resistance: Good resistance to sulfur-bearing gases at high temperatures.
International Conformances and Quality
- Process: GTAW (TIG) Solid Precision Rod.
- Surface Condition: Ultra-clean bright drawn finish.
AWS A5.9 ER446LMo - Chemical Composition and Mechanical Properties
AWS Chemical Composition Requirements (%)
| C max | Mn max | Si max | P max | S max | Cr | Ni max | Mo | N max | Ti+Nb |
|---|---|---|---|---|---|---|---|---|---|
| 0.015 | 0.40 | 0.40 | 0.02 | 0.02 | 25.0 – 27.0 | 0.50 | 0.75 – 1.50 | 0.015 | 0.20-1.0 |
Mechanical Properties of Undiluted Weld Metal (Typical)
| Yield Strength (psi) | Tensile Strength (psi) | Elongation % | Hardness (typical) |
|---|---|---|---|
| 72,000 | 88,000 | 24% | 190 HV |
Properties are typical for as-welded conditions using high-purity Argon. Post-weld heat treatment is generally not required and may cause embrittlement.
Welding Parameters, Diameter Range, and Packaging Options
Welding with ER446LMo TIG Rod requires strict cleanliness. The super-ferritic structure is sensitive to carbon and nitrogen pick-up from the atmosphere; therefore, robust trailing shields and back-purging are mandatory.
Recommended Welding Parameters (GTAW - Tig Process)
| Wire Diameter (mm) | Amps (DCSP) | Shielding Gas | Gas Flow (CFH) | Back Purge |
|---|---|---|---|---|
| 1.6mm (1/16") | 80-120 | Argon 99.99% | 20-25 | Mandatory |
| 2.4mm (3/32") | 110-170 | Argon 99.99% | 25-30 | Mandatory |
| 3.2mm (1/8") | 160-230 | Argon 99.99% | 30-35 | Mandatory |
Note: Use 2% Ceriated or Lanthanated tungsten. Avoid Thoriated tungsten if radioactive restrictions apply. Ensure back-purge oxygen levels are below 50 ppm.
Standard Diameters & Export Packaging (TIG Rods)
| Diameter (mm) | Diameter (in) | Length (mm) | Unit Packing | Box Weight |
|---|---|---|---|---|
| 1.6 mm | 1/16 | 1000 | Plastic Tube | 5 Kg / 10 Lbs |
| 2.4 mm | 3/32 | 1000 | Plastic Tube | 5 Kg / 10 Lbs |
| 3.2 mm | 1/8 | 1000 | Plastic Tube | 5 Kg / 10 Lbs |
| 4.0 mm | 5/32 | 1000 | Plastic Tube | 5 Kg / 10 Lbs |
Rod marking includes full heat number and AWS classification for critical nuclear and power plant traceability.
Primary Applications for DIPTIINOX® ER446LMo TIG Rod
The **ER446LMo** TIG rod is the ultimate solution for high-corrosion industrial thermal exchange:
- Power Generation: Tube-to-tubesheet welds in seawater-cooled condensers for coastal power stations.
- Desalination: Multi-stage flash (MSF) and reverse osmosis (RO) high-pressure piping components.
- Chemical Industry: Equipment handling highly oxidizing acids and chloride-contaminated chemical streams.
- Waste Incineration: Heat recovery systems exposed to high-temperature sulfur-bearing flue gases.
- Petrochemical: Refineries where high-temperature hydrogen or sulfide corrosion is present.
Our Global Reach: Serving Countries Worldwide
DIPTI Metal Industries is a truly global exporter, proudly supplying 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
Get a Quote Today for Your ER446LMo TIG Rod Requirements!
Do you need to buy ER446LMo TIG Rod for seawater condenser or desalination projects? Contact Dipti Metal Industries, the biggest manufacturer and ER446LMo TIG Rod Exporter in Mumbai, India. We offer rapid worldwide shipping and expert technical guidance for super-ferritic welding.
Price guidance (non-binding): USD 18.00–115.00 per kg depending on interstitial purity levels, quantity, and certification (MTC 3.1). Final pricing via quotation.
ER446LMo TIG Rod — Frequently Asked Questions
ER446LMo offers extreme resistance to chloride-induced pitting and Stress Corrosion Cracking (SCC). It is technically superior to 316L and even some Duplex grades in high-chloride seawater applications at elevated temperatures.
Yes, maintaining nitrogen-free and oxygen-free high-purity Argon shielding is critical. These alloys are sensitive to interstitial pickup, which can cause significant loss of ductility and corrosion resistance in the weld bead.
Beyond its corrosion resistance, ER446LMo has a thermal expansion coefficient similar to carbon steel. This minimizes thermal fatigue in heat exchangers that undergo frequent temperature cycling, unlike austenitic fillers that expand significantly more.
Contact Dipti Metal Industries, Your Global ER446LMo TIG Rod Manufacturer, Exporter, and Supplier in India
Worldwide export logistics: Seaworthy wooden case packaging • Line-wise tagging • Full chemical analysis provided. We are the trusted source for ER446LMo filler metal for export from Mumbai.