DIPTI METAL INDUSTRIES
DIPTIINOX® ER347 TIG Rod (AWS A5.9): Leading Niobium Stabilized Manufacturer & Exporter for High-Temperature Service
Dipti Metal Industries is a Leading ER347 TIG Rod Manufacturer and Niobium-Stabilized Welding Wire ER347 TIG Rod Exporter in Mumbai, India, specializing in high-performance AWS A5.9 ER347 GTAW filler metal under the DIPTIINOX® brand. The key characteristic of this grade is the addition of Niobium (Nb), which acts as a stabilizing element. Niobium preferentially binds with carbon, preventing the formation of harmful Chromium carbides in the weld metal's grain boundaries. This makes the weld highly resistant to intergranular corrosion (weld decay) when exposed to sustained service temperatures between 750°F and 1500°F (400°C to 815°C). ER347 is the standard choice for welding AISI 347 and 321 base metals and is widely used in power generation and petrochemical applications. We guarantee full conformance to AWS A5.9 and ASME SFA A5.9 for all critical industrial applications globally.
DIPTIINOX® ER347: Niobium-Stabilized for High-Temperature Corrosion Protection
The AWS A5.9 ER347 Filler Metal is a Chromium-Nickel-Niobium (Columbium) austenitic stainless steel alloy designed to solve the problem of intergranular corrosion (or sensitization) when the weldment is exposed to temperatures ranging from 750°F to 1500°F (400°C to 815°C). In this temperature range, non-stabilized alloys (like 304) suffer from carbon migrating to the grain boundaries and reacting with Chromium, leading to a loss of corrosion resistance. The presence of Niobium (Nb) in the ER347 filler metal, at a minimum of ten times the carbon content, chemically locks the carbon and prevents the depletion of Chromium. This makes ER347 the best choice for welding stabilized stainless steels AISI 347 and AISI 321, especially in critical components like steam lines, turbine casings, and boiler tubes where high-heat service is standard and intergranular attack must be prevented.
Key Features, Benefits, and Conformances of ER347 Filler Metal
Key Features & Service Performance (As per Datasheet)
- Niobium Stabilization: Contains Niobium (Nb) to prevent the formation of deleterious Chromium carbides.
- High-Temperature Integrity: Excellent resistance to intergranular corrosion in the sensitization range (750°F - 1500°F).
- Base Metal Match: Perfectly matches the corrosion and heat properties of 347 and 321 stainless steels.
- General Corrosion Resistance: Provides good resistance to general corrosion in many chemical environments.
- Weld Process: Excellent arc stability and puddle control for TIG (GTAW) welding.
International Conformances and Quality
- Form: Solid Wire/Rod for TIG (GTAW), and spools for MIG (GMAW).
- Finish: Bright finish for TIG, layer-wound spools for consistent feed.
AWS A5.9 ER347 - Chemical Composition and Mechanical Properties
AWS Chemical Composition Requirements (%)
| C max | Cr | Ni | Mo max | Mn | Si | P max | S max | Nb |
|---|---|---|---|---|---|---|---|---|
| 0.08 | 19.0 – 21.5 | 9.0 – 11.0 | 0.75 | 1.0 – 2.5 | 0.30 – 0.65 | 0.03 | 0.03 | 10 x C min – 1.0 max |
Note: Niobium (Nb) ensures stabilization against sensitization, making it crucial for high-temperature applications.
Deposited Chemical Composition % (Typical)
| C | Cr | Ni | Mo | Mn | Si | Nb |
|---|---|---|---|---|---|---|
| 0.04 | 19.50 | 9.50 | 0.30 | 1.30 | 0.40 | 0.40 |
Mechanical Properties (R.T.) of Deposited All Weld Metal (Typical)
| Yield Strength (psi) | Tensile Strength (psi) | Elongation % |
|---|---|---|
| 58,000 | 88,000 | 42% |
Data is typical for ER347 weld metal deposited by TIG (GTAW) using 100% Argon as the shielding gas.
Welding Parameters, Diameter Range, and Packaging Options
Our ER347 Filler Metal is supplied in cut lengths for TIG (GTAW) welding applications requiring Niobium stabilization for high-temperature service integrity.
Recommended Welding Parameters (GTAW - TIG Process) - DCSP
| Wire Diameter (in) | Amps (DCSP) | Volts | Shielding Gas | Note |
|---|---|---|---|---|
| .035 | 60-90 | 12-15 | Argon 100% | Parameters are dependent upon plate thickness and welding position. Preheat is generally not required; max interpass temperature is typically 150°C / 300°F. |
| .045 | 80-110 | 13-16 | ||
| 1/16 | 90-130 | 14-16 | ||
| 3/32 | 120-175 | 15-20 |
Note: Other shielding gases may be used for TIG welding, chosen for quality, cost, and operability.
Standard Diameters & Packaging (GTAW - TIG Rods)
| Diameter (in) | Diameter (mm) | Length (in) | Length (mm) | Packaging (kgs) |
|---|---|---|---|---|
| .030 | 0.8 | 36 | 914 | 5 kgs (Plastic Container) |
| .035 | 0.9 | 36 | 914 | 5 kgs (Plastic Container) |
| .045 | 1.2 | 36 | 914 | 5 kgs (Plastic Container) |
| 1/16 | 1.6 | 36 | 914 | 5 kgs (Plastic Container) |
| 3/32 | 2.4 | 36 | 914 | 5 kgs (Plastic Container) |
| 1/8 | 3.2 | 36 | 914 | 5 kgs (Plastic Container) |
| 5/32 | 4.0 | 36 | 914 | 5 kgs (Plastic Container) |
| 3/16 | 4.8 | 36 | 914 | 5 kgs (Plastic Container) |
We also supply ER347 in spools (2#, 10#, 25#, 30#, 33#) for MIG/GMAW on request.
Primary Applications for DIPTIINOX® ER347 TIG Rod & Wire
The ER347 filler metal is specified for welding stabilized stainless steel base metals in critical applications where resistance to high-temperature sensitization is paramount. Its key uses include:
- Power Generation: Welding steam pipes, superheaters, and boiler tubes that operate above 750°F (400°C).
- Aerospace & Aircraft: Components requiring stability and strength at elevated temperatures, such as jet engine parts and exhaust manifolds.
- Chemical & Petrochemical: Fabrication of vessels, piping, and reactors where the equipment must resist intergranular attack after prolonged high-heat service.
- Welding Stabilized Steels: Joining AISI 347 and AISI 321 base materials.
- Dissimilar Metals: Welding a stabilized steel to an unstabilized steel, where the ER347 weld metal provides the required high-temperature stability.
ER347 TIG Rods Global Export Markets: We are the Biggest ER347 TIG Rod Manufacturer Supplying from Mumbai, India
Dipti Metal Industries is a proud ER347 TIG Rod Exporter, ER347 TIG Rod Trader, and ER347 TIG Rod Distributors from our base in TIG rod ER347 TIG Rod manufacturer Mumbai, India. We serve as an ER347 manufacturer in Asia and a reliable ER347 manufacturer in Europe, ensuring timely and compliant delivery to major industrial hubs across over 190 countries globally.
Explore Our Extensive Global Reach (Illustrative Markets)
- 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
Get a Quote Today for Your ER347 Filler Metal Requirements!
Are you searching to buy ER347 TIG Rod or ER347 MIG Wire that is dependable, high-quality, and AWS A5.9 certified for your stabilized, high-temperature welding applications? Contact Dipti Metal Industries, your expert biggest manufacturer and ER347 TIG Rod Manufacturer, Niobium-Stabilized GTAW/GMAW Filler Metal Supplier in Mumbai, India, today to discuss your specific requirements or to request a personalized, custom quote. Our team is dedicated to providing you with the most effective, safest, and most reliable DIPTIINOX® ER347 solutions.
Price guidance (non-binding): USD 10.00–60.00 per kg depending on grade, diameter, packaging (Rod/Spool/Coil), quantity, and delivery terms. Final prices are quotation-based.
ER347 TIG Rod & Wire — Frequently Asked Questions
Niobium (also called Columbium) is a stabilizing element. Its primary function is to chemically **'lock up' the carbon** in the alloy by forming Niobium carbides instead of Chromium carbides. This prevents Chromium depletion along grain boundaries, thereby ensuring the weld metal is resistant to **intergranular corrosion (sensitization)** when used at high service temperatures (**above 750°F / 400°C**).
ER347 TIG Rod is specifically recommended for welding the stabilized stainless steel grades **AISI 347 and AISI 321**. It is also an excellent choice for welding straight Chromium-Nickel steels (like 304/304L) that will be placed in service environments where exposure to temperatures between **750°F and 1500°F (400°C to 815°C)** is anticipated.
ER347 can be used as an alternative to ER308L for general-purpose welding of 304/304L, especially if the fabricated part will experience **high-temperature service**. It should generally **not** replace ER316L if the application requires Molybdenum for improved resistance to pitting and crevice corrosion in chloride environments, as ER347 has very little Mo.
Yes, the weld deposit offers excellent mechanical properties at room temperature, with typical tensile strength around 88,000 psi and good ductility (42% elongation), making it suitable for high-pressure and structural applications in addition to its high-temperature corrosion resistance.
Contact Dipti Metal Industries, Your ER347 TIG Rod Manufacturer, TIG Rod ER347 Exporter, TIG Rod ER347 Supplier in Mumbai, TIG Rod ER347 in India
Global export expertise: Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI. We are a worldwide exporter of quality ER347 Filler Metal for export from Mumbai, India.