ASTM B392 R04210 Niobium Flanges
At Amardeep Steel Centre LLP, we pride ourselves on delivering high-quality and industry-leading materials, and our range of flanges, including the ASTM B392 R04210 Niobium Flanges, exemplifies our commitment to excellence. This guide will delve into the specifics of R04210 Niobium Flanges, exploring their properties, advantages, and applications. By the end, you’ll have a thorough understanding of what these flanges offer and why they are a valuable component in various industries.
What is ASTM B392 R04210 Niobium Flanges?
ASTM B392 R04210 Niobium Flanges are specialized components designed to connect pipes, valves, pumps, and other equipment within a piping system. Niobium, a transition metal with atomic number 41, is renowned for its excellent resistance to corrosion and high-temperature stability, making it a critical material in many industrial applications.
The designation “R04210” refers to a specific grade of niobium that meets the stringent requirements outlined in the ASTM B392 specification. This specification covers niobium and niobium alloy forgings, including flanges, used in environments that demand high purity and exceptional mechanical properties.

Key Properties of Niobium Flanges ASTM B392 R04210
The R04210 Niobium Flanges boast several key properties that make them ideal for demanding applications. Below are the primary characteristics:
- Corrosion Resistance: One of the standout features of Niobium ASTM B392 R04210 Flanges is their resistance to corrosion. This makes them suitable for use in environments where they are exposed to aggressive chemicals, acids, and other corrosive substances.
- High-Temperature Stability: Niobium R04210 retains its mechanical properties even at elevated temperatures. This makes these flanges ideal for applications in the aerospace, nuclear, and chemical industries, where components must withstand extreme heat.
- Low Thermal Expansion: Niobium has a low coefficient of thermal expansion, meaning that it doesn’t expand or contract significantly with temperature changes. This property is crucial in maintaining the integrity of the flange connections under varying temperature conditions.
- Ductility and Toughness: Niobium is known for its ductility, which allows it to be formed into complex shapes without cracking. Its toughness ensures that the flanges can endure mechanical stress without fracturing.
- Biocompatibility: Although not the primary use in industrial flanges, niobium’s biocompatibility is worth noting, as it is sometimes used in medical applications. This property underscores the metal’s inert nature and resistance to oxidation.
ASTM B392 R04210 Niobium Flanges Advantages
Niobium flanges manufactured according to ASTM B392 R04210 offer several advantages, making them a preferred choice in various industries:
- Enhanced Durability: The combination of niobium’s inherent properties ensures that these flanges have an extended service life, even in harsh environments.
- Versatility in Application: The flanges are suitable for use in a wide range of industries, including aerospace, chemical processing, nuclear energy, and electronics, due to their ability to withstand extreme conditions.
- Superior Corrosion Resistance: The exceptional resistance to oxidation and corrosion makes these flanges reliable in environments where exposure to corrosive substances is a concern.
- Consistency in High-Temperature Performance: Niobium flanges maintain their structural integrity at high temperatures, which is critical for applications involving heat exchangers, reactors, and other high-temperature systems.
- Compatibility with Other Metals: Niobium flanges can be used in conjunction with other materials, such as stainless steel or titanium, without the risk of galvanic corrosion, making them versatile in multi-material systems.
- Safety and Reliability: The high purity and biocompatibility of niobium reduce the risk of material degradation, ensuring the safety and reliability of the flanges in sensitive applications.


Schedule and Size Chart
Schedule | Nominal Pipe Size (NPS) | Outside Diameter (OD) (inches) | Flange Thickness (T) (inches) | Bolt Circle Diameter (BCD) (inches) | Number of Bolts | Bolt Diameter (inches) |
SCH 10 | 1/2″ to 24″ | 0.84″ to 24.00″ | 0.25″ to 1.5″ | 1.25″ to 27.0″ | 4 to 24 | 0.625″ to 1.5″ |
SCH 40 | 1/2″ to 24″ | 0.84″ to 24.00″ | 0.25″ to 2.0″ | 1.50″ to 27.5″ | 4 to 24 | 0.75″ to 1.75″ |
SCH 80 | 1/2″ to 24″ | 0.84″ to 24.00″ | 0.30″ to 2.5″ | 1.75″ to 28.0″ | 4 to 24 | 0.875″ to 2.0″ |
Mechanical Properties Chart
Property | Value | Testing Standard |
Tensile Strength | 275 MPa (40 ksi) | ASTM E8 |
Yield Strength (0.2% offset) | 150 MPa (22 ksi) | ASTM E8 |
Elongation | 20% | ASTM E8 |
Hardness | 110 HV | ASTM E18 |
Modulus of Elasticity | 103 GPa (15 x 10^6 psi) | ASTM E111 |
Specifications Chart
Specification | Description |
Standard | ASTM B392 |
Grade | R04210 |
Flange Type | Slip-on, Weld Neck, Blind, Threaded, Socket Weld |
Dimensions | ASME B16.5, B16.47, B16.36, B16.48 |
Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 |
Surface Finish | Smooth, Serrated, Spiral Serrated |
Chemical Composition Chart
Element | Composition (%) |
Niobium (Nb) | ≥ 99.9 |
Tantalum (Ta) | ≤ 0.05 |
Titanium (Ti) | ≤ 0.02 |
Zirconium (Zr) | ≤ 0.02 |
Carbon (C) | ≤ 0.01 |
Oxygen (O) | ≤ 0.03 |
Nitrogen (N) | ≤ 0.01 |
Hydrogen (H) | ≤ 0.001 |
Physical Properties Chart
Property | Value |
Density | 8.57 g/cm³ |
Melting Point | 2,468°C (4,474°F) |
Thermal Conductivity | 53.7 W/m·K |
Coefficient of Thermal Expansion | 7.1 x 10^-6 /°C (20-100°C) |
Electrical Resistivity | 152 nΩ·m |
Application Chart
Industry | Application | Benefits |
Aerospace | Jet engines, rocket components | High-temperature stability, corrosion resistance |
Chemical Processing | Handling aggressive chemicals | Corrosion resistance, low thermal expansion |
Nuclear | Reactor components, piping systems | Stability under radioactive conditions |
Electronics | Superconductors, electronic devices | Low electrical resistivity, thermal stability |
Medical | Implants, surgical instruments | Biocompatibility, inert nature |
Why Choose Amardeep Steel Centre LLP for Supply Of ASTM B392 R04210 Niobium Flanges?
At Amardeep Steel Centre LLP, we understand that the reliability of your piping system depends on the quality of its components. Our R04210 Niobium Flanges are manufactured to the highest standards, ensuring you receive a product that meets your exact specifications.
- Quality Assurance: We follow strict quality control processes, from material selection to final inspection, ensuring that every flange we produce meets ASTM standards.
- Customization: We offer customized solutions to meet your unique requirements, whether you need flanges of specific dimensions, shapes, or surface finishes.
- Expertise: Our team of experienced professionals has in-depth knowledge of niobium and its applications, allowing us to provide expert guidance and support throughout your purchase.
- Global Reach: We serve clients worldwide, delivering high-quality flanges to a diverse range of industries. No matter where you are, you can count on Amardeep Steel Centre LLP to supply you with the best niobium flanges.
The R04210 Niobium Flanges offered by Amardeep Steel Centre LLP are more than just a product; they are a solution to the challenges faced by industries operating in extreme environments. With properties that include exceptional corrosion resistance, high-temperature stability, and superior durability, these flanges are designed to meet the demands of your most critical applications.
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 B392 R04210 Niobium 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.