ASTM B521 Tantalum R05252 Flanges – Overview and Applications
Amardeep Steel Centre LLP is a leading manufacturer, exporter, and supplier of premium-grade Tantalum ASTM B521 R05252 Flanges. These flanges are engineered to meet the stringent requirements of various industrial applications, offering unmatched durability, corrosion resistance, and high-temperature stability. As a trusted name in the industry, we pride ourselves on delivering high-quality products that cater to the needs of our global clientele.
What are ASTM B521 R05252 Tantalum Flanges?
ASTM B521 R05252 Tantalum Flanges are specialized components made from Tantalum, a rare and highly corrosion-resistant metal. Tantalum flanges are used to connect pipes, valves, pumps, and other equipment in piping systems, particularly in environments that demand exceptional resistance to corrosion and high temperatures. The designation “R05252” refers to the specific grade of Tantalum used, which is known for its high purity and superior performance in challenging conditions.
Tantalum flanges under the ASTM B521 specification are widely recognized for their reliability in various industries, including chemical processing, petrochemical, pharmaceutical, and nuclear sectors. These flanges are designed to withstand harsh environments where other materials may fail, making them an ideal choice for critical applications.

ASTM B521 R05252 Tantalum Flanges Properties
The ASTM B521 R05252 Tantalum Flanges possess a unique set of properties that make them suitable for a wide range of industrial applications. Some of the key properties include:
- Corrosion Resistance: Tantalum is highly resistant to corrosion by most acids and alkalis, including hydrochloric acid, sulfuric acid, and nitric acid. This makes Tantalum flanges an excellent choice for chemical processing and other environments where corrosive substances are present.
- High Melting Point: Tantalum has a melting point of approximately 2996°C (5425°F), which allows these flanges to maintain their structural integrity even at extreme temperatures. This is particularly beneficial in high-temperature applications such as nuclear reactors and heat exchangers.
- Biocompatibility: Tantalum is biocompatible, meaning it does not react adversely with body tissues. This property makes ASTM B521 R05252 Tantalum Flanges suitable for use in medical and pharmaceutical industries, where materials must be non-reactive and safe for human contact.
- Ductility: Despite its high strength, Tantalum is a ductile metal, meaning it can be formed into complex shapes without breaking. This property ensures that Tantalum flanges can be manufactured with precise dimensions to fit various piping systems.
- Excellent Conductivity: Tantalum exhibits good electrical and thermal conductivity, making it suitable for applications where heat and electricity need to be efficiently managed.
Advantages of ASTM B521 R05252 Tantalum Flanges
When it comes to choosing flanges for critical applications, ASTM B521 R05252 Tantalum Flanges offer several distinct advantages:
- Longevity: Due to their exceptional corrosion resistance, Tantalum flanges have a longer service life compared to other materials. This reduces the need for frequent replacements, lowering maintenance costs and downtime.
- Safety: In industries dealing with highly corrosive substances or extreme temperatures, safety is paramount. Tantalum flanges ensure that the piping systems remain leak-proof and secure, preventing accidents and environmental hazards.
- Versatility: The properties of Tantalum make these flanges suitable for a wide range of applications across various industries. Whether in chemical plants, power generation, or semiconductor manufacturing, ASTM B521 R05252 Tantalum Flanges deliver consistent performance.
- High Performance: Tantalum’s ability to withstand both high temperatures and corrosive environments means these flanges maintain their integrity under the most demanding conditions, ensuring reliable and uninterrupted operations.
- Minimal Contamination: Tantalum’s non-reactive nature prevents contamination of the substances it comes into contact with. This is crucial in industries like pharmaceuticals and semiconductors, where purity and cleanliness are essential.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Flange Type | Schedule | Size Range (mm) |
1/2″ | Weld Neck | 10-80 | 15-25 |
3/4″ | Slip-On | 10-80 | 20-30 |
1″ | Blind | 10-80 | 25-35 |
1 1/2″ | Socket Weld | 10-80 | 35-50 |
2″ | Lap Joint | 10-80 | 50-65 |
3″ | Threaded | 10-80 | 75-90 |
4″ | Weld Neck | 10-80 | 100-120 |
Mechanical Properties Chart
Property | Value |
Tensile Strength (MPa) | 310 – 450 |
Yield Strength (MPa) | 170 – 220 |
Elongation (%) | 20 – 30 |
Hardness (Rockwell B) | 70 – 90 |
Specifications Chart
Specification | Details |
Standard | ASTM B521 |
Material Grade | R05252 |
Flange Types | Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded |
Size Range | 1/2″ to 4″ |
Pressure Rating | Class 150 to Class 2500 |
Manufacturing Process | Forged |
Chemical Composition Chart
Element | Composition (%) |
Tantalum (Ta) | 97.0 – 99.0 |
Tungsten (W) | 1.5 – 2.5 |
Carbon (C) | Max 0.01 |
Oxygen (O) | Max 0.02 |
Nitrogen (N) | Max 0.02 |
Hydrogen (H) | Max 0.001 |
Physical Properties Chart
Property | Value |
Density (g/cm³) | 16.6 |
Melting Point (°C) | 3017 |
Thermal Conductivity (W/m·K) | 57 |
Electrical Resistivity (µΩ·m) | 135 |
Modulus of Elasticity (GPa) | 186 |
Application Chart
Industry | Application |
Chemical Processing | Heat Exchangers, Reactors, Liners |
Aerospace | Jet Engines, Missile Components |
Medical | Surgical Instruments, Implants |
Nuclear | Radiation Shielding, Reactor Components |
Electronics | Capacitors, High-Temperature Furnaces |
Why Choose Amardeep Steel Centre LLP for ASTM B521 R05252 Tantalum Flanges?
As a leading exporter, supplier, trader, and stockist of ASTM B521 R05252 Tantalum Flanges, Amardeep Steel Centre LLP offers products that meet the highest standards of quality and performance. Here’s why you should partner with us:
- Quality Assurance: We adhere to strict quality control measures to ensure that every Tantalum flange we supply meets or exceeds industry standards. Our flanges undergo rigorous testing to verify their properties and performance.
- Global Supply Network: With a well-established global supply network, we can deliver ASTM B521 R05252 Tantalum Flanges to clients worldwide. Whether you are located in North America, Europe, Asia, or elsewhere, we ensure timely delivery of our products.
- Competitive Pricing: We offer competitive pricing on all our products without compromising on quality. Our cost-effective solutions help our clients achieve their project goals within budget.
- Expert Support: Our team of experts is always available to provide technical support and guidance on selecting the right Tantalum flanges for your specific needs. We work closely with our clients to understand their requirements and deliver customized solutions.
- Extensive Inventory: As leading traders and stockists, we maintain a comprehensive inventory of ASTM B521 R05252 Tantalum Flanges in various sizes and specifications. This allows us to fulfill orders promptly, minimizing lead times.
R05252 Tantalum Flanges are an indispensable component in industries that demand the highest levels of corrosion resistance, temperature stability, and durability. With their unique properties and numerous advantages, these flanges play a critical role in ensuring the safety and efficiency of piping systems across various applications.
At Amardeep Steel Centre LLP, we are committed to providing our customers with top-quality Tantalum flanges that meet their specific needs. Whether you require standard sizes or custom solutions, our team is ready to assist you in finding the perfect product for your application. Contact us today to learn more about our ASTM B521 R05252 Tantalum Flanges and how we can help you achieve your project goals.
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 R05252 Tantalum 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.