DIPTI METAL INDUSTRIES
AISI 4340 Alloy Steel Manufacturer, Supplier, & Exporter of Bars & Rods (UNS G43400, 34CrNiMo6, EN24)
DIPTI METAL INDUSTRIES is a leading AISI 4340 Alloy Steel Manufacturer, reliable AISI 4340 Supplier, and global AISI 4340 Exporter. AISI 4340 (UNS G43400) is a highly versatile Nickel-Chromium-Molybdenum alloy steel known for its exceptional toughness and high strength in the heat-treated condition. It is a deep-hardening steel that maintains its mechanical properties in large sections, making it ideal for the aerospace, defense, and heavy machinery sectors. Our AISI 4340 bars are engineered for high fatigue resistance and reliability under stress. As a premier AISI 4340 Stockiest in Mumbai, we supply Round, Square, and Hex bars in various conditions, including Annealed and Quenched & Tempered (Q&T), adhering to ASTM A29, AMS 6414, and AMS 6415 specifications.
Dipti Metal Industries – Your Premier AISI 4340 Partner
Dipti Metal Industries is a globally recognized AISI 4340 Manufacturer and UNS G43400 Exporter. With 45+ years of expertise in high-performance alloys, we deliver precision-engineered bars for critical industrial applications. As a dedicated 34CrNiMo6 Supplier, we ensure our AISI 4340 materials meet the highest aerospace and military standards. Our manufacturing unit in Mumbai, India, is equipped with advanced heat treatment facilities to provide Quenched & Tempered 4340 Bars that meet stringent mechanical property requirements.
Why Choose DIPTI®
- 45+ Years of Metallurgical Excellence
- Exporting to 65+ Countries Worldwide
- Specialized in AMS 6414 & AMS 6415 Grades
- Complete Traceability & MTC (Mill Test Certificate)
Strategic Supply
As a key AISI 4340 Distributor, we maintain extensive stock in Mumbai. We provide value-added services such as cut-to-length, centerless grinding, and ultrasonic testing to ensure 100% reliability for our global clients.
Key Features of AISI 4340 Alloy Steel
Exceptional Toughness
The Ni-Cr-Mo combination ensures that AISI 4340 maintains its strength and toughness even in large diameter sections.
High Fatigue Resistance
Renowned for its ability to withstand cyclic loading, making it the preferred choice for aircraft crankshafts and landing gear.
Deep Hardening Properties
Highly responsive to heat treatment, allowing for uniform hardening across the entire cross-section of the component.
Versatile Machinability
Exhibits good machinability in the annealed condition and can be finished to high tolerances after heat treatment.
International Standards & Worldwide Equivalents of AISI 4340
As a global AISI 4340 Manufacturer and 34CrNiMo6 Exporter, we ensure our bars meet diverse international specifications. This facilitates seamless sourcing for multinational engineering projects.
| Region / Body | Equivalent Grade | Standard Code |
|---|---|---|
| United States (UNS) | UNS G43400 | ASTM A29, SAE J404 |
| United States (Aerospace) | AMS 6414 / 6415 | MIL-S-5000 |
| European Union (EN) | 34CrNiMo6 | EN 10083-3, EN 10277 |
| Germany (W.Nr.) | 1.6582 / 1.6565 | DIN 17200 |
| United Kingdom (BS) | EN24 / 817M40 | BS 970 |
| Japan (JIS) | SNCM439 | JIS G4053 |
| France (AFNOR) | 35NCD6 | NF A35-552 |
| China (GB) | 40CrNiMoA | GB/T 3077 |
Chemical Composition of AISI 4340 Alloy Steel
*(Note: Chemistry conforms to ASTM A29 / SAE 4340 specifications.)*
Mechanical Properties of AISI 4340 (Quenched & Tempered)
Available Shapes & Profiles for AISI 4340 Bars & Rods
Round Bars
Diameter: 10mm to 800mm. Available in Black, Peeled, Ground, and Polished finishes. Standard lengths: 3m to 6m.
Hex Bars
Size: 12mm to 100mm A/F. Ideal for high-strength bolts, nuts, and specialized aerospace fasteners.
Square Bars
Size: 20mm to 300mm. Heavy-duty square sections for structural shafts and machinery components.
Manufacturing & Quality Control for AISI 4340
As an ISO-certified AISI 4340 Manufacturer, Dipti Metal Industries ensures that every bar meets the absolute requirements for aerospace and heavy-duty engineering:
- PMI Testing: 100% Positive Material Identification for Ni, Cr, and Mo content.
- Ultrasonic (UT) Testing: To detect internal flaws as per ASTM A388 standards.
- Hardness Testing: Verified across the section to ensure uniform heat treatment.
- Certifications: Mill Test Certificate (MTC) per EN 10204 3.1.
- Heat Treat Reports: Full documentation of the Quench and Temper cycles.
- Third Party Inspection: Available from agencies like TUV, BV, and LLOYDS.
Key Global Applications of AISI 4340 Bars & Rods
Aerospace & Defense
Aircraft landing gear, structural parts, heavy-duty engine bolts, and hydraulic components.
Oil & Gas Industry
Drill bits, high-pressure valves, pump shafts, and downhole tool components.
Automotive & Heavy Eng
Crankshafts, axle shafts, high-torque gears, and connecting rods for heavy vehicles.
Machine Tools
Spindles, chucks, high-strength rollers, and structural members for heavy machinery.
AISI 4340 Global Export Markets: AISI 4340 Supplier in Mumbai
Dipti Metal Industries is a leading AISI 4340 Exporter, supplying precision bars from Mumbai, India to the world's most demanding industries.
- 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
- 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
- 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
- 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
Contact Your AISI 4340 Supplier in Mumbai
Expert in seaworthy export packing, line-wise bagging, and full documentation. We are a premier AISI 4340 Stockiest.