ASTM B521 Tantalum R05255 Flanges: Unmatched Performance and Reliability
Welcome to Amardeep Steel Centre LLP, your premier source for high-quality ASTM B521 Tantalum R05255 Flanges. Our commitment to excellence ensures that you receive top-notch products that meet the stringent demands of your industry. This page provides a comprehensive overview of ASTM B521 R05255 Tantalum Flanges, including their properties, advantages, and our role as leading exporters and suppliers.
What Are ASTM B521 R05255 Tantalum Flanges?
Tantalum R05255 Flanges are specialized components designed for applications requiring exceptional resistance to corrosion and high temperatures. Tantalum is a rare, high-performance metal renowned for its excellent chemical stability, making it ideal for use in challenging environments. ASTM B521 is a standard specification that outlines the requirements for tantalum flanges, ensuring they meet rigorous industry standards.

ASTM B521 R05255 Tantalum Flanges Properties
- Corrosion Resistance: Tantalum is highly resistant to corrosion from acids and other aggressive chemicals, including hydrofluoric acid and sulfuric acid. This property makes ASTM B521 R05255 Tantalum Flanges exceptionally durable in harsh chemical environments.
- High Melting Point: With a melting point of around 3017°C (5473°F), tantalum flanges maintain their integrity at extremely high temperatures, which is crucial for high-temperature applications.
- Strength and Ductility: Tantalum R05255 is known for its impressive strength and ductility, providing the mechanical robustness required for demanding applications while allowing for flexibility during installation.
- Biocompatibility: Tantalum’s biocompatibility makes it suitable for use in medical devices and implants, where it does not react adversely with biological tissues.
- Excellent Machinability: Despite its high strength, tantalum can be precisely machined, which is beneficial for creating custom flanges with specific dimensions and configurations.
Advantages of ASTM B521 R05255 Tantalum Flanges
- Superior Longevity: The inherent properties of tantalum contribute to a longer service life compared to other materials. This results in reduced maintenance and replacement costs over time.
- Enhanced Reliability: Tantalum flanges offer consistent performance even in the most demanding conditions, ensuring the reliability of your systems and processes.
- Cost-Effective: While tantalum may be more expensive than other materials, its durability and low maintenance needs can lead to cost savings in the long run.
- Versatility: These flanges are suitable for a wide range of applications, from chemical processing to aerospace, due to their unique combination of properties.
- Precision Engineering: ASTM B521 R05255 Tantalum Flanges are manufactured to precise specifications, ensuring they meet the exact requirements of your projects.


Schedule and Size Chart
Schedule | Nominal Pipe Size (NPS) | Outside Diameter (OD) (inches) | Wall Thickness (inches) | Flange Diameter (inches) |
SCH 10 | 1/2″ – 24″ | 0.840 – 24.000 | 0.109 – 0.500 | 4.25 – 29.00 |
SCH 40 | 1/2″ – 24″ | 0.840 – 24.000 | 0.147 – 0.688 | 4.50 – 29.50 |
SCH 80 | 1/2″ – 24″ | 0.840 – 24.000 | 0.188 – 0.875 | 4.75 – 30.00 |
SCH 160 | 1/2″ – 24″ | 0.840 – 24.000 | 0.250 – 1.406 | 5.25 – 31.00 |
XXH | 1/2″ – 24″ | 0.840 – 24.000 | 0.294 – 2.000 | 5.50 – 32.00 |
Mechanical Properties Chart
Property | ASTM B521 R05255 Tantalum Flanges |
Tensile Strength (MPa) | 345 MPa (50 ksi) |
Yield Strength (0.2% Offset) | 241 MPa (35 ksi) |
Elongation (% in 2 in.) | 20 – 30% |
Hardness (Rockwell B) | 40 – 60 HRB |
Modulus of Elasticity | 186 GPa (27 x 10⁶ psi) |
Poisson’s Ratio | 0.34 |
Shear Strength | 210 MPa (30.5 ksi) |
Specifications Chart
Standard | Specification |
Material Specification | ASTM B521 |
Grade | R05255 |
Type | Tantalum Flanges |
Forms Available | Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded |
Size Range | 1/2″ to 24″ NPS |
Schedule | SCH 10, SCH 40, SCH 80, SCH 160, XXH |
Manufacturing Process | Forged |
Surface Finish | Mill Finish |
End Connections | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
Chemical Composition Chart
Element | Composition (%) |
Tantalum (Ta) | 99.95% Min |
Oxygen (O) | 0.015% Max |
Carbon (C) | 0.010% Max |
Nitrogen (N) | 0.010% Max |
Hydrogen (H) | 0.005% Max |
Iron (Fe) | 0.010% Max |
Molybdenum (Mo) | 0.020% Max |
Silicon (Si) | 0.010% Max |
Niobium (Nb) | 0.10% Max |
Physical Properties Chart
Property | Value |
Density | 16.6 g/cm³ (0.599 lb/in³) |
Melting Point | 3017°C (5473°F) |
Boiling Point | 5458°C (9856°F) |
Thermal Conductivity | 57 W/m·K |
Electrical Resistivity | 131 nΩ·m at 20°C |
Thermal Expansion | 6.5 x 10⁻⁶ /°C |
Specific Heat Capacity | 0.14 J/g·K |
Application Chart
Industry | Application |
Chemical Processing | Heat exchangers, reactors, and vessels exposed to aggressive chemicals. |
Aerospace | High-temperature engine components, missile parts. |
Medical Devices | Surgical implants, equipment where biocompatibility is required. |
Electronics | Capacitors, high-performance electrical components. |
Nuclear | Fuel rod components, corrosion-resistant structures in reactors. |
Oil & Gas | Equipment in high-temperature and corrosive environments. |
Pharmaceuticals | Equipment in sterile and reactive environments. |
Our Role as ASTM B521 R05255 Tantalum Flanges Exporters and Suppliers
At Amardeep Steel Centre LLP, we pride ourselves on being leading ASTM B521 R05255 Tantalum Flanges exporters and suppliers. Our extensive inventory includes a wide range of sizes and configurations to meet diverse customer needs. We work closely with trusted manufacturers to ensure that our flanges adhere to the highest quality standards.
- Quality Assurance: Every batch of flanges undergoes rigorous testing to verify compliance with ASTM B521 standards. This ensures that you receive products that meet or exceed industry expectations.
- Customized Solutions: We offer customization options to cater to specific project requirements. Our team can provide tailored solutions based on your technical specifications.
- Reliable Supply Chain: With a robust supply chain network, we ensure timely delivery of your orders, minimizing downtime and keeping your projects on track.
- Competitive Pricing: Our strategic partnerships with manufacturers allow us to offer competitive pricing without compromising on quality.
- Expert Support: Our knowledgeable team is available to assist with technical inquiries, product selection, and after-sales support to ensure a seamless experience.
Tantalum R05255 Flanges are a premium choice for applications demanding exceptional performance and reliability. With superior corrosion resistance, high-temperature stability, and mechanical strength, these flanges provide lasting value and peace of mind. As trusted ASTM B521 R05255 Tantalum Flanges exporters and suppliers, Amardeep Steel Centre LLP is dedicated to delivering high-quality products and unparalleled service.
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 R05255 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.