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Why Tantalum Flanges Are Essential for High-Performance Industries – A Guide by Sandvik

Sandvik, a leading name in exotic metal solutions, proudly delivers premium-grade Tantalum Flanges engineered to meet the most demanding industrial standards. Known for their exceptional resistance to corrosion and high temperatures, these flanges are crucial components in environments where traditional metals fail. In this blog, we explore what Tantalum Flanges are, their advantages, various applications, and the types available for industrial use.

Tantalum Flanges are fittings used to connect pipes, valves, pumps, and other equipment in a piping system. Made from tantalum—a rare, hard, and corrosion-resistant metal—these flanges are ideal for industries handling aggressive chemicals, high pressures, and elevated temperatures. Their primary role is to create a tight, leak-proof seal between components while withstanding the harshest of operating conditions.

One of the key benefits of choosing tantalum is its ability to resist corrosion even in extremely acidic environments. This metal remains stable and functional in contact with hydrochloric acid, sulfuric acid, nitric acid, and aqua regia. As a result, Tantalum Flanges Manufacturers like Sandvik are in high demand among companies requiring long-lasting and low-maintenance components for their critical operations.

Another advantage is biocompatibility. Tantalum is non-reactive with bodily fluids, making it suitable for medical and pharmaceutical systems. Its high melting point (over 3000°C) also makes it ideal for high-heat applications such as aerospace and nuclear systems. Whether you're facing thermal expansion issues or dealing with aggressive media, tantalum flanges deliver unmatched performance and reliability.

In terms of usage, tantalum flanges are indispensable in several sectors. Chemical processing plants use them for acid transport lines and heat exchangers. In the electronics industry, they play a role in the manufacturing of semiconductors and capacitors. Pharmaceutical companies rely on them in reactors and high-purity systems. Even in aerospace and defense, these flanges are used in propulsion systems and corrosive fuel lines, where strength and endurance are non-negotiable. For high-demand applications, businesses often consult with Tantalum Flanges Suppliers who can provide custom solutions based on system specifications.

At Sandvik, we offer a wide variety of tantalum flanges to meet different application needs. Here are the main types:

Weld Neck Flanges – Designed for high-pressure systems, they are welded directly to the pipe for maximum strength and leak resistance.

Slip-On Flanges – Easy to install and perfect for low-pressure environments where frequent maintenance is required.

Blind Flanges – Used to seal pipe ends or block off a system, making them ideal for isolation and future expansion.

Socket Weld Flanges – Suitable for smaller-diameter, high-pressure piping where space is limited.

Threaded Flanges – Ideal for systems where welding is not feasible, offering a tight seal via threading.

All our products are sourced from trusted Tantalum Flanges Stockists to ensure high-quality material and certified traceability. Each flange undergoes rigorous testing to meet international standards like ASTM B521 and ASME specifications.

Whether you're managing a chemical reactor or engineering a high-temperature system, trust Tantalum Flanges Exporters like Sandvik to deliver precision, durability, and performance. Reach out today to explore how we can help elevate your next project with world-class tantalum solutions.

Specification of Tantalum Flanges

Grade R05200, R05400, R05252 (Ta-2.5W), RO5255 (Ta-10W)
Standard ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Pressure Rating Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Size 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Flange EN 6Bar 10Bar 16Bar 25Bar 40Bar
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Common Types Forged / Threaded / Screwed / Plate
Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Test Certificates EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report etc.

Equivalent Grades of Tantalum Flanges

STANDARD Material
Tantalum R05200, R05400, R05255, R05252, R05240

Chemical Composition of Tantalum Flanges

Element R05200
(%,Max)		 R05400
(%,Max)		 R05255
(Ta10W) / (%,Max)		 R05252
(Ta2.5W) / (%,Max)		 R05240
(Ta-40Nb) / (%,Max)
C 0.01 0.01 0.01 0.01 0.01
O 0.015 0.03 0.015 0.015 0.02
N 0.01 0.01 0.01 0.01 0.01
H 0.0015 0.0015 0.0015 0.0015 0.0015
Fe 0.01 0.01 0.01 0.01 0.01
Mo 0.02 0.02 0.02 0.02 0.02
Nb 0.1 0.1 0.1 0.5 35.0-42.0
Ni 0.01 0.01 0.01 0.01 0.01
Si 0.005 0.005 0.005 0.005 0.005
Ti 0.01 0.01 0.01 0.01 0.01
W 0.05 0.05 9.0-11.0 2.0-3.5 0.05

Mechanical Properties of Tantalum Flanges

Grade Tensile strength　δbpsi (MPa)， ≥ Yield strength　δ0.2， psi (MPa)，≥ 　Elongation in 1″/2″ gage length， ％， ≥
R05200/R05400 30000 (207) 20000 (138) 25
　R05252 40000 (276) 28000　(193)　 20
　R05255 70000 (481) 60000 (414) 15
　R05240 40000　(276)　 28000 (193) 20