DIPTI METAL INDUSTRIES
Stainless Steel ASTM A276 / AISI 431 Manufacturer, Supplier, & Exporter of Bars & Rods (UNS S43100, EN 1.4057)
DIPTI METAL INDUSTRIES is a leading ASTM A276 AISI 431 Manufacturer, reliable AISI 431 Supplier, and authorized AISI 431 Exporter under the DIPTI® brand. We specialize in martensitic stainless steel, AISI 431 (UNS S43100, EN 1.4057, X17CrNi16-2), recognized for its unique combination of *high tensile strength*, good toughness, and enhanced corrosion resistance compared to other martensitic grades like 410 or 420. This is primarily due to its higher chromium and nickel content. AISI 431 is heat-treatable to achieve a wide range of mechanical properties and is magnetic in all conditions. We provide various profiles including Round, Square, and Hexagonal Bars, as well as Rods, with finishes like Hot Finished, Cold Drawn, Annealed, or Quenched & Tempered (Q&T) to meet specific mechanical property requirements. As a top ASTM A276 431 Manufacturers in India, we ensure full compliance to ASTM A276, ASTM A193 (Grade B6), ASTM A182 (Grade F6NM), ASME SA276, ASME SA193, and ASME SA182. As a trusted AISI 431 Stockiest and AISI 431 Importer with a robust global supply chain, we provide competitive pricing and expert support across AISI 431 in Mumbai and worldwide as an AISI 431 Distributor, prioritizing exceptional strength, toughness, and improved corrosion resistance for critical applications.
About Dipti Metal Industries – Your Trusted AISI 431 Partner
Dipti Metal Industries is a globally recognized ASTM A276 431 Manufacturer, AISI 431 Exporter, and UNS S43100 Supplier of premium industrial raw materials. Specializing in Stainless Steel, Alloy Steel, Carbon Steel, Nickel Alloys, Copper Alloys, and Titanium, we are committed to delivering high-performance engineering materials worldwide. As one of the leading AISI 431 Manufacturers in India, our dedication to quality for high-strength, tough, and corrosion-resistant martensitic stainless steel is unwavering.
What Defines Us
- 45+ Years of Industrial Expertise as an AISI 431 Manufacturer
- Worldwide Export Network & Global Certifications (e.g., ASME SA276 431, EN 10088-3, EN 1.4057)
- Strict Quality Control with Complete MTC / Test Reports (e.g., ASTM A276 431, ASTM A193 B6)
- ISO-based manufacturing systems & international compliance
- Worldwide Shipping – Europe, USA, Middle East, Africa, Asia (as an AISI 431 Exporter)
- Reputed among EPC contractors, OEMs & global distributors
Our Commitment to You
As an ASTM A276 431 Supplier, we deliver precision-engineered metal products with guaranteed quality, traceability, and on-time delivery. Each order is handled with meticulous attention to material standards (including DIN 17440 431, JIS SUS431), dimensional tolerances, packaging, and export documentation.
- Guaranteed Quality & Traceability (for UNS S43100 products)
- Meticulous Attention to Standards & Tolerances (e.g., AS 1449 431)
- Secure & Compliant Export Packaging
- Comprehensive Export Documentation
Key Features of AISI 431 Stainless Steel
Stainless Steel AISI 431 (UNS S43100 / EN 1.4057) is a premium martensitic stainless steel, distinguished by its higher chromium and nickel content compared to other martensitic grades, which provides a unique balance of *high strength*, *good toughness*, and *enhanced corrosion resistance*. It is heat-treatable to achieve excellent mechanical properties. As a leading AISI 431 Supplier and ASTM A276 431 Stockiest, we highlight its core benefits:
High Strength & Good Toughness (Heat Treatable)
Can be heat treated (quenched and tempered) to achieve very high tensile strength and a good level of toughness, a superior combination for martensitic grades, making it suitable for heavily stressed components, from an expert AISI 431 Manufacturer.
Enhanced Corrosion Resistance
Offers significantly better corrosion resistance than AISI 410 and 420, particularly in marine and mild industrial environments, chloride solutions, and oxidizing acids. Its resistance is maximized in the hardened and tempered condition with a polished surface, fulfilling requirements of an EN 1.4057 Exporter.
Good Machinability
Exhibits good machinability, especially in the annealed condition, which is beneficial for manufacturing complex parts and precise components, meeting BS 970 431S29 standards.
Magnetic Properties
Being a martensitic stainless steel, AISI 431 is magnetic in both the annealed and hardened states, which can be advantageous for specific applications, compliant with AFNOR Z15CN16-02.
Good Oxidation Resistance
Offers good resistance to oxidation in intermittent service up to 925°C (1700°F) and in continuous service up to 760°C (1400°F), from a reliable GOST 14Х17Н2 Supplier.
Widely Accepted Globally
A globally recognized and preferred grade for many critical engineering applications requiring a superior balance of strength, toughness, and corrosion resistance, ensuring wide compatibility, thanks to our global network as an AS 431 Exporter.
International Standards & Worldwide Equivalents of AISI 431
As a global ASTM A276 AISI 431 Manufacturer and UNS S43100 Exporter, we ensure our products meet or exceed the requirements of various international standards, making them suitable for projects worldwide. This includes compliance as an EN 1.4057 Manufacturer and ASME SA276 431 Supplier.
| Region / Standard Body | Equivalent Grade | Standard Code |
|---|---|---|
| United States (ASTM/ASME) | AISI 431 / UNS S43100 | ASTM A276, ASTM A193 Gr. B6, ASTM A182 Gr. F6NM, ASME SA276, ASME SA193 Gr. B6, ASME SA182 Gr. F6NM |
| European Union (EN) | 1.4057 | EN 10088-3 |
| Germany (DIN/EN) | X17CrNi16-2 | DIN 17440 (or EN equivalent) |
| United Kingdom (BS) | 431S29 | BS 970 |
| France (AFNOR) | Z15CN16-02 | NF A35-573 |
| Japan (JIS) | SUS 431 | JIS G4303 |
| China (GB) | 1Cr17Ni2 | GB/T 1220 |
| Russia (GOST) | 14Х17Н2 | GOST 5632 |
| Italy (UNI) | X17CrNi16-2 | UNI 6900 |
| Australia (AS) | 431 | AS 1449 |
| International UNS | S43100 | — |
Chemical Composition of AISI 431 Stainless Steel (Typical)
As an experienced AISI 431 Manufacturer, we guarantee the precise chemical composition of our AISI 431 Stainless Steel Bars (UNS S43100), adhering strictly to industry standards like ASTM A276 and EN 10088-3 for optimal mechanical properties and corrosion resistance, especially highlighting its controlled Chromium, Nickel, and Carbon content.
*(Note: Iron balance and other elements as per ASTM A276 / ASME SA276 for UNS S43100. The higher Cr and Ni content compared to 410/420 provides enhanced corrosion resistance and toughness, while C ensures hardenability.)*
Mechanical Properties of AISI 431 Stainless Steel
Our AISI 431 Bars and Rods (UNS S43100) exhibit *superior* mechanical properties, particularly when heat treated, making them reliable for demanding structural and engineering applications. Properties vary significantly between annealed and hardened/tempered conditions, meeting the benchmarks set by standards such as ASTM A276 and ASME SA276.
*(Note: Values are typical for annealed material and for a common hardened & tempered condition as per ASTM A276. Specific mechanical properties after heat treatment will depend on the exact process, including tempering temperature, to optimize for strength, hardness, and toughness.)*
Available Shapes & Profiles for AISI 431 Bars & Rods
DIPTI Metal Industries, a leading AISI 431 Supplier and ASTM A276 431 Stockiest, offers AISI 431 Stainless Steel bars (UNS S43100, EN 1.4057) in a comprehensive range of shapes and finishes suitable for applications requiring high strength, good toughness, and enhanced corrosion resistance.
Round Bars
- Hot Rolled / Cold Drawn / Annealed / Quenched & Tempered (Q&T) Finish
- Available in a wide range of sizes, suitable for marine shafts, propeller shafts, pump shafts, and fasteners.
- Excellent for machining and fabrication of parts for high-stress, corrosive applications, from a top AISI 431 Round Bar Manufacturer.
Square Bars
- Supplied with precision tolerances
- Ideal for specialized valve components, structural supports, and other parts benefiting from high strength and corrosion resistance.
- Consistent dimensions for reliable fit, as a dedicated AISI 431 Square Bar Supplier.
Hex Bars
- Commonly used for high-strength fasteners, nuts, bolts, and specialized components in marine, chemical, and general engineering sectors.
- Accurate hexagonal dimensions for secure grip
- Available in various sizes, from an experienced AISI 431 Hex Bar Exporter.
Rods / Straight Lengths
- Supplied in custom lengths as per project needs for various machine parts, aircraft fittings, and industrial components.
- Controlled straightness for critical applications, often supplied in a heat-treated condition to meet specific property requirements.
- Available with hot-finished or bright finishes, from your reliable AISI 431 Rods Supplier.
Manufacturing & Quality Control for ASTM A276 / AISI 431 Bars
DIPTI Metal Industries, as an established ASTM A276 431 Manufacturer and one of the leading AISI 431 Manufacturers in India, follows strict quality standards, ensuring every AISI 431 bar and rod (UNS S43100, EN 1.4057) meets global engineering requirements for high strength, good toughness, and enhanced corrosion resistance, providing reliable performance. Our comprehensive quality assurance covers all aspects of ASTM A276, ASTM A193, ASTM A182, ASME SA276, ASME SA193, and ASME SA182.
Rigorous Testing & Inspection
- 100% PMI Testing: Positive Material Identification to verify grade (e.g., UNS S43100) and crucial Chromium, Nickel, and Carbon content.
- Ultrasonic (UT) Inspection: For internal flaw detection, crucial for ASME SA276 431 and ASME SA193 B6 compliance in critical components.
- Dimensional Accuracy Checks: Ensuring precise measurements as per EN 10088-3.
- Visual Inspection: For surface finish and defects, upholding our reputation as a quality AISI 431 Supplier.
- Extensive Mechanical Testing: Tensile, Yield, Elongation, Reduction of Area, Hardness (Brinell/Rockwell), and Impact (Charpy) tests are performed for both annealed and heat-treated conditions as per specified standards, ensuring desired strength, hardness, and toughness, provided by our X17CrNi16-2 Manufacturer.
Certifications & Process Control
- Precise Heat Treatment Control: Annealing, quenching, and tempering processes are strictly controlled to achieve desired mechanical properties and microstructure, with careful attention to tempering temperatures to balance strength and toughness, adhering to DIN 17440 431 requirements.
- Complete Material Test Certificates (MTC): As per EN 10204 3.1, provided by our GB 1Cr17Ni2 Manufacturer.
- Third-Party Inspection (TPI) available on request, for all our AISI 431 Exporter shipments.
- Compliance with ASTM A276 431, ASTM A193 B6, ASTM A182 F6NM, ASME SA276 431, ASME SA193 B6, ASME SA182 F6NM, and other relevant international standards, affirming our position as a reliable S43100 Manufacturer.
Key Global Applications of AISI 431 Bars & Rods
The high tensile strength, good toughness, and enhanced corrosion resistance (especially after heat treatment) of AISI 431 Stainless Steel bars (UNS S43100, EN 1.4057) make them indispensable across a diverse range of demanding industrial applications globally, particularly where a balance of robust mechanical properties and resistance to corrosive environments is paramount. We are a trusted AISI 431 Exporter and ASTM A276 431 Supplier for these sectors, providing products that meet various international standards like JIS G4303 431 and BS 970 431.
Marine & Offshore Engineering
- Propeller shafts, pump shafts, valve components, and fittings for marine environments due to its excellent corrosion resistance to seawater and high strength.
Chemical Processing & Petrochemical Industry
- Pump and valve parts, agitators, and mixing equipment in mild to moderately corrosive chemical process streams, where strength, toughness, and good corrosion resistance are essential, supplied by your X17CrNi16-2 Supplier.
Aircraft & Aerospace Components
- Aircraft fittings, fasteners, and structural parts requiring high strength-to-weight ratio, toughness, and resistance to atmospheric corrosion.
High-Tensile Fasteners & Bolting
- Used for high-strength bolts, nuts, and studs (e.g., ASTM A193 Grade B6) in applications demanding reliable mechanical performance in conjunction with corrosion resistance.
Valve Components (Seats, Stems)
- Precisely machined valve stems, seats, and discs in various industrial valves, benefiting from high hardness for wear resistance and improved corrosion characteristics, meeting ASME SA182 F6NM requirements.
General Engineering & Machine Parts
- Shafts, spindles, gears, and other mechanical components that are subjected to high stresses and require a good balance of strength, impact resistance, and corrosion protection.
AISI 431 Global Export Markets: AISI 431 Supplier in India Supplying from Mumbai
Dipti Metal Industries is a proud AISI 431 Exporter, serving as a reliable AISI 431 Supplier in Mumbai and an AISI 431 Distributor to OEMs, EPC contractors, and end-users worldwide. We are highly proficient as an ASTM A276 431 Exporter and a top AISI 431 Manufacturers in India, ensuring our UNS S43100 and EN 1.4057 products reach destinations in compliance with all relevant international standards like ASTM A276, ASTM A193, ASTM A182, ASME SA276, ASME SA193, ASME SA182, EN 10088-3, DIN 17440, BS 970, NF A35-573, JIS G4303, GB/T 1220, GOST 5632, UNI 6900, and AS 1449.
- USA: Houston, Los Angeles, New York, Chicago, New Orleans (Top ASTM A276 431 Supplier)
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal (Leading UNS S43100 Exporter)
- Mexico: Mexico City, Monterrey, Guadalajara, Veracruz (Trusted AISI 431 Exporter)
- 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 (Reliable EN 1.4057 Exporter)
- Argentina: Buenos Aires, Cordoba, Rosario (Key ASME SA193 B6 Exporter)
- 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 (Prominent DIN 17440 431 Exporter, EN 1.4057 Manufacturer)
- United Kingdom: London, Manchester, Aberdeen, Glasgow, Liverpool (Leading BS 970 431 Exporter, 431S29 Manufacturer)
- Netherlands: Rotterdam, Amsterdam, The Hague
- France: Paris, Marseille, Lyon, Le Havre, Bordeaux (Expert NF A35-573 431 Exporter)
- Italy: Milan, Rome, Genoa, Venice, Naples (Reliable UNI 6900 431 Exporter)
- Spain: Madrid, Barcelona, Valencia, Bilbao, Seville
- Russia: Moscow, Saint Petersburg, Kazan, Novorossiysk, Sochi (Global GOST 5632 431 Exporter)
- 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 (Trusted ASTM A182 F6NM Exporter)
- UAE: Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah (Reliable AISI 431 Supplier)
- Qatar: Doha, Ras Laffan (Leading S43100 Exporter)
- 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 (Top AISI 431 Manufacturers in India)
- China: Shanghai, Guangzhou, Tianjin, Shenzhen, Qingdao, Hong Kong (Expert GB 1Cr17Ni2 Manufacturer)
- Japan: Tokyo, Osaka, Nagoya, Yokohama, Kobe (Dedicated JIS SUS431 Supplier)
- 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 (Key AS 431 Exporter)
- Nigeria: Lagos, Port Harcourt, Abuja, Kano (Reliable AISI 431 Exporter)
- 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 (Trusted AS 1449 431 Manufacturer)
- 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 Stainless Steel AISI 431 Bar Requirements!
Are you searching for the most competitive AISI 431 Exporter price or need guaranteed ASTM A276 431 certification (including ASME SA276 431, ASTM A193 B6, ASTM A182 F6NM, EN 10088-3, EN 1.4057)? Contact Dipti Metal Industries, your expert ASTM A276 AISI 431 Manufacturer and AISI 431 Wholesaler in Mumbai, India, today. We provide full documentation and the best DIPTI® AISI 431 Supplier solutions, also serving as an UNS S43100 Stockiest.
Important: When requesting a quote, please specify the required AISI 431 Shape (e.g., Round, Square, Hex), dimensions (OD/side, length), finish (Hot Rolled / Cold Drawn / Annealed / Q&T), and quantity to our AISI 431 Manufacturers in India.
Stainless Steel ASTM A276 / AISI 431 Bars — Frequently Asked Questions
Find answers to common questions about AISI 431 Manufacturer production, grades (UNS S43100, EN 1.4057), standards (ASTM A276, ASTM A193, ASTM A182, ASME SA276, ASME SA193, ASME SA182), and applications.
AISI 431 (UNS S43100 / EN 1.4057) Stainless Steel is a martensitic chromium-nickel grade, specifically designed to offer *high tensile strength* and *good toughness* combined with enhanced corrosion resistance. Unlike 410 and 420, the addition of nickel provides improved corrosion resistance, especially in marine environments. It is heat-treatable to achieve a wide range of mechanical properties and is magnetic in all conditions. As an AISI 431 Manufacturer, we ensure these properties in every bar we supply, adhering to standards like DIN 17440 431 and JIS SUS431.
AISI 431 is preferred over 410 or 420 when a higher level of *corrosion resistance*, particularly in marine atmospheres and mild industrial environments, is required in conjunction with *high strength and toughness*. While 410 and 420 can achieve high hardness, 431's balanced composition with nickel provides better corrosion resistance and ductility after tempering. It offers an excellent combination of strength, toughness, and good resistance to impact, making it ideal for heavily stressed components in corrosive environments where 410/420 might be insufficient. Our ASTM A276 431 Supplier recommends it for applications benefiting from its superior balance of properties, making us a trusted UNS S43100 Supplier.
DIPTI Metal Industries, an established ASTM A276 431 Supplier and UNS S43100 Stockiest, supplies AISI 431 bars in various profiles including Round Bars, Square Bars, and Hexagonal Bars, as well as Rods. Finishes include Hot Rolled, Cold Drawn, Annealed, Quenched & Tempered (for specific property ranges), and Bright Bars, catering to different mechanical property and surface quality requirements for demanding applications. We are a prominent 431 Round Bar Supplier and 431 Hex Bar Exporter, also offering ASME SA276 431 compliant products.
AISI 431 (UNS S43100) is widely recognized globally. Key equivalents include EN 1.4057 (Europe), X17CrNi16-2 (Germany/EN), 431S29 (UK), Z15CN16-02 (France), and SUS 431 (Japan). It adheres to specifications like ASTM A276, ASTM A193 (often for B6 or B6X fasteners, though 431 has specific variants), ASTM A182 (often for F6NM forgings), ASME SA276, ASME SA193, ASME SA182, EN 10088-3, DIN 17440, BS 970, NF A35-573, JIS G4303, GB/T 1220, GOST 5632, UNI 6900, and AS 1449, ensuring global compliance from an EN 1.4057 Manufacturer and ASTM A276 431 Exporter.
Contact Dipti Metal Industries, Your AISI 431 Supplier & 431 Round Bar Manufacturer
Global export expertise: Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI. We are a worldwide AISI 431 Exporter, a key AISI 431 Stockiest, and leading AISI 431 Manufacturers in India in Mumbai, providing products compliant with ASTM A276 431, ASTM A193 B6, ASTM A182 F6NM, UNS S43100, and EN 1.4057 standards.