ASTM B521 Tantalum R05240 Flanges: An In-Depth Guide
Amardeep Steel Centre LLP is a premier exporter and supplier of Tantalum ASTM B521 R05240 Flanges, recognized for their superior quality and performance in critical applications. In this comprehensive guide, we will explore the key properties, advantages, and applications of these flanges, as well as answer the question, “What are ASTM B521 R05240 Tantalum Flanges?”
What are ASTM B521 R05240 Tantalum Flanges?
ASTM B521 R05240 Tantalum Flanges are specialized components used to connect pipes, valves, pumps, and other equipment to form a piping system. These flanges are made from tantalum, a rare and highly corrosion-resistant metal, following the ASTM B521 standard specification. The material grade R05240 refers to tantalum with a high degree of purity, ensuring exceptional performance even in the most demanding environments.
These flanges are essential in industries where corrosion resistance and material integrity are critical, such as chemical processing, nuclear reactors, and aerospace engineering. They are designed to withstand extreme conditions, including exposure to highly corrosive substances, high temperatures, and pressure, making them invaluable in applications where other materials would fail.

Properties of ASTM B521 R05240 Tantalum Flanges
- Exceptional Corrosion Resistance: Tantalum is renowned for its outstanding resistance to corrosion. ASTM B521 R05240 Tantalum Flanges can withstand corrosive environments that would deteriorate other metals, such as hydrochloric acid, sulfuric acid, and nitric acid. This makes them ideal for use in chemical processing plants, where corrosion is a significant concern.
- High Melting Point: Tantalum has a melting point of 3017°C (5463°F), one of the highest among metals. This property allows ASTM B521 R05240 Tantalum Flanges to perform exceptionally well in high-temperature environments, such as those found in nuclear reactors and aerospace applications.
- Biocompatibility: Tantalum is biocompatible, meaning it is non-toxic and well-tolerated by the human body. This makes ASTM B521 R05240 Tantalum Flanges suitable for medical applications, particularly in surgical implants and prosthetics.
- Ductility and Malleability: Tantalum is highly ductile and malleable, allowing ASTM B521 R05240 Tantalum Flanges to be easily fabricated into various shapes and sizes. This flexibility in manufacturing makes them a preferred choice for custom applications.
- Electrical Conductivity: Tantalum is also known for its good electrical conductivity, making Flanges Tantalum ASTM B521 R05240 suitable for use in electronic components and circuits.
Advantages of ASTM B521 R05240 Tantalum Flanges
- Long Service Life: One of the primary advantages of ASTM B521 R05240 Tantalum Flanges is their long service life. Their exceptional resistance to corrosion and high temperatures means they require less frequent replacement, reducing downtime and maintenance costs in industrial applications.
- Superior Performance in Extreme Environments: R05240 Tantalum Flanges are engineered to perform under extreme conditions, including highly corrosive environments and high-pressure systems. Their durability and reliability make them indispensable in critical industries such as chemical processing, pharmaceuticals, and oil and gas.
- Versatility: These flanges are highly versatile and can be used in a wide range of applications, from high-temperature environments in aerospace to highly corrosive environments in chemical processing. Their adaptability ensures they can meet the specific needs of various industries.
- Cost-Effective in the Long Run: While tantalum flanges may have a higher initial cost compared to other materials, their durability and resistance to corrosion and high temperatures make them a cost-effective choice in the long run. They help reduce maintenance and replacement costs, ultimately offering better value for money.
- Compliance with International Standards: ASTM B521 R05240 Tantalum Flanges are manufactured to comply with international standards, ensuring they meet the highest quality and performance benchmarks. This compliance guarantees that the flanges are suitable for global applications, providing assurance to customers worldwide.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Outside Diameter (OD) (inches) | Flange Thickness (inches) | Bolt Circle Diameter (inches) | Number of Bolts | Bolt Size (inches) | Weight (lbs) |
1/2″ | 3.50 | 0.56 | 2.38 | 4 | 0.63 | 4.1 |
3/4″ | 3.88 | 0.62 | 2.75 | 4 | 0.63 | 4.7 |
1″ | 4.25 | 0.69 | 3.12 | 4 | 0.63 | 5.7 |
1-1/2″ | 5.00 | 0.81 | 3.88 | 4 | 0.63 | 7.6 |
2″ | 6.00 | 0.88 | 4.75 | 4 | 0.75 | 10.0 |
3″ | 7.50 | 1.00 | 6.00 | 4 | 0.75 | 14.4 |
4″ | 9.00 | 1.12 | 7.50 | 8 | 0.75 | 24.7 |
6″ | 11.00 | 1.25 | 9.50 | 8 | 0.88 | 36.8 |
8″ | 13.50 | 1.38 | 11.75 | 8 | 0.88 | 63.4 |
10″ | 16.00 | 1.50 | 14.25 | 12 | 1.00 | 92.4 |
12″ | 19.00 | 1.69 | 17.00 | 12 | 1.00 | 130.7 |
Mechanical Properties Chart
Property | Value |
Tensile Strength | 207 MPa (30,000 psi) |
Yield Strength (0.2% Offset) | 138 MPa (20,000 psi) |
Elongation | 20% |
Hardness | 65-75 HRB |
Modulus of Elasticity | 186 GPa (27 x 10^6 psi) |
Specifications Chart
Specification | Details |
ASTM Standard | B521 |
Material Grade | R05240 |
Flange Type | Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded |
Size Range | 1/2″ to 24″ |
Pressure Rating | Class 150 to 2500 |
Manufacturing Process | Forged |
Surface Finish | As per customer requirement |
Chemical Composition Chart
Element | Composition (%) |
Tantalum (Ta) | 99.95 (minimum) |
Oxygen (O) | 0.015 (maximum) |
Carbon (C) | 0.010 (maximum) |
Nitrogen (N) | 0.010 (maximum) |
Hydrogen (H) | 0.0015 (maximum) |
Iron (Fe) | 0.010 (maximum) |
Niobium (Nb) | 0.010 (maximum) |
Titanium (Ti) | 0.010 (maximum) |
Physical Properties Chart
Property | Value |
Density | 16.6 g/cm³ (0.600 lb/in³) |
Melting Point | 3017°C (5463°F) |
Thermal Conductivity | 54 W/m·K |
Coefficient of Expansion | 6.5 µm/m·K (at 25°C) |
Electrical Resistivity | 13.5 µΩ·cm |
Specific Heat Capacity | 0.140 J/g·K |
Application Chart
Industry | Application |
Chemical Processing | Handling of corrosive chemicals such as hydrochloric acid, sulfuric acid, and nitric acid. |
Aerospace | High-temperature applications, including engine components and turbine blades. |
Nuclear Industry | Use in reactors and other critical components due to resistance to high temperatures and radiation. |
Medical | Surgical implants and prosthetics due to biocompatibility and non-toxicity. |
Oil and Gas | Piping systems exposed to corrosive environments and high pressures. |
Electronics | Components requiring good electrical conductivity and resistance to heat. |
Benefits of Choosing Amardeep Steel Centre LLP as your Supplier of ASTM B521 Ro5240 Tantalum Flanges?
Amardeep Steel Centre LLP is a trusted name in the industry, offering a wide range of R05240 Tantalum Flanges that meet the highest standards of quality and performance. As leading ASTM B521 R05240 Tantalum Flanges exporters and suppliers, we are committed to providing our customers with the best products and services.
- Quality Assurance: We ensure that all our R05240 Tantalum Flanges are manufactured to the highest quality standards, meeting international specifications. Our rigorous quality control processes guarantee that each flange delivers exceptional performance and reliability.
- Competitive Pricing: We offer competitive pricing on all our products, ensuring that our customers receive the best value for their investment. Our pricing structure is transparent, with no hidden costs, making us a preferred choice among ASTM B521 R05240 Tantalum Flanges traders and stockists.
- Global Reach: As a leading supplier and exporter, we have a global network that allows us to deliver ASTM B521 Tantalum Flanges to customers worldwide. Our logistics expertise ensures timely delivery and efficient service, no matter where you are located.
- Expert Support: Our team of experts is always available to provide technical support and guidance, helping you choose the right flanges for your specific application. Whether you need advice on material selection or have specific customization requirements, we are here to assist you.
- Customization: We understand that every application is unique, which is why we offer customization options for our R05240 Tantalum Flanges. Whether you need flanges in a specific size, shape, or specification, we can tailor our products to meet your exact needs.
R05240 Tantalum Flanges are an essential component in various industries, offering unparalleled corrosion resistance, high-temperature performance, and long-term reliability. At Amardeep Steel Centre LLP, we pride ourselves on being a leading ASTM B521 R05240 Tantalum Flanges exporter and supplier, providing top-quality products that meet the stringent demands of our global customers.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B521 Tantalum R05240 Flanges. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.