Niobium R04210 Fasteners are commercially pure niobium fasteners identified by UNS R04210 and commonly specified to ASTM B392 requirements for wrought niobium products. They are selected for their high ductility, corrosion resistance and suitability for specialized chemical-processing and high-temperature applications. We supply Niobium R04210 bolts, screws, studs, nuts, washers and custom fasteners in different sizes, thread configurations and finishes for industrial requirements.
Niobium R04210 is particularly useful where material ductility, resistance to aggressive chemical environments and reliable fabricated fastening are important. Depending on the application, fasteners can be supplied as socket head cap screws, flat washers, threaded rods, stud bolts and other non-standard configurations.
What Are Niobium R04210 Fasteners?
Niobium R04210 Fasteners are manufactured from commercially pure niobium and are designated under the UNS R04210 material identification system. Niobium is a refractory metal known for its high melting point, ductility and resistance to many corrosive environments.
These fasteners are intended for applications where conventional stainless steel or carbon steel fastening materials may not provide the required combination of corrosion resistance and material performance.
The R04210 grade is associated with high ductility, making it suitable for forming and fabrication into different fastener geometries. Depending on the design, we can supply precision-machined components for applications involving specialized equipment, chemical processing systems and other demanding industrial environments.
Table of Contents
- ➤ What Are Niobium R04210 Fasteners?
- ➤ Niobium R04210 Fasteners Specifications
- ➤ Types of Niobium R04210 Fasteners We Supply
- ➤ Chemical Composition of Niobium R04210
- ➤ Mechanical Properties of Niobium R04210
- ➤ Niobium R04210 Fasteners Weight Chart
- ➤ Equivalent Grades of Niobium R04210
- ➤ Why Choose High Ductility Niobium UNS R04210 Fasteners?
- ➤ Applications of Niobium R04210 Fasteners
- ➤ Niobium R04210 Fasteners Supplier in India
- ➤ Niobium R04210 Fasteners Exporter to UAE
- ➤ Manufacturing of Niobium R04210 Fasteners
Niobium R04210 Fasteners Specifications
| Property | Details |
|---|---|
| Product | Niobium R04210 Fasteners |
| Material | Commercially Pure Niobium |
| UNS Designation | R04210 |
| Standard | ASTM B392 |
| Product Forms | Bolts, Screws, Studs, Nuts, Washers, Threaded Rods |
| Screw Type | Socket Head Cap Screws |
| Washer Type | Flat Washers |
| Manufacturing | Machined / Cold Worked / Fabricated as applicable |
| Threads | Metric / UNC / UNF / Custom |
| Size | As per drawing or customer requirement |
| Finish | As manufactured / Custom |
| Application | Chemical, process, high-temperature and specialized equipment |
Types of Niobium R04210 Fasteners We Supply
We manufacture and supply different fastening configurations according to application requirements.
➤ Niobium R04210 Bolts
R04210 niobium bolts are available in hex-head and other customized configurations. They can be produced for equipment assembly where resistance to corrosive environments is important.
➤ Niobium R04210 Socket Head Cap Screws
Niobium R04210 Socket Head Cap Screws feature a recessed hexagonal drive and compact head design. They are useful for assemblies where installation space is limited or a flush, compact fastening arrangement is preferred.
➤ Niobium R04210 Stud Bolts
Stud bolts provide threaded engagement at both ends and are commonly used with nuts for equipment flanges and specialized assemblies.
➤ Niobium R04210 Flat Washers
Niobium R04210 Flat Washers distribute the applied fastening load across the surface around a bolt or screw hole. They can be supplied in standard or customized dimensions.
➤ Niobium R04210 Nuts
Matching nuts can be manufactured or supplied for compatible niobium fastening assemblies.
➤ Niobium R04210 Threaded Rods
Threaded rods can be supplied in specified lengths and thread configurations for custom fabrication and equipment assembly.
➤ Custom Niobium Fasteners
For specialized projects, we can manufacture non-standard dimensions, head styles, thread configurations and component geometries according to customer drawings.
Chemical Composition of Niobium R04210
| Element | R04210 Maximum, wt.% |
|---|---|
| Carbon (C) | 0.010 |
| Nitrogen (N) | 0.010 |
| Oxygen (O) | 0.025 |
| Hydrogen (H) | 0.0015 |
| Zirconium (Zr) | 0.020 |
| Tantalum (Ta) | 0.300 |
| Iron (Fe) | 0.010 |
| Silicon (Si) | 0.005 |
| Tungsten (W) | 0.050 |
| Nickel (Ni) | 0.005 |
| Molybdenum (Mo) | 0.020 |
| Hafnium (Hf) | 0.020 |
| Titanium (Ti) | 0.030 |
| Niobium (Nb) | Balance |
Mechanical Properties of Niobium R04210
| Mechanical Property | R04210 |
|---|---|
| Condition | Annealed |
| Ultimate Tensile Strength, min. | 125 MPa |
| Yield Strength, min. | 73 MPa |
| Elongation, typical/min. by applicable product requirement | 20–25%* |
| Elastic Modulus, typical | ~103 GPa |
| Density | ~8.57 g/cm³ |
| Poisson's Ratio, typical | ~0.4 |
Niobium R04210 Fasteners Weight Chart
| Product | Size Example | Approx. Weight Basis |
|---|---|---|
| Socket Head Cap Screw | M6 × 20 | Calculated from geometry |
| Socket Head Cap Screw | M8 × 30 | Calculated from geometry |
| Socket Head Cap Screw | M10 × 40 | Calculated from geometry |
| Hex Bolt | M12 × 50 | Calculated from geometry |
| Stud Bolt | M16 × 100 | Calculated from geometry |
| Flat Washer | M10 | Calculated from OD/ID/thickness |
| Flat Washer | M12 | Calculated from OD/ID/thickness |
| Threaded Rod | M10 × 1000 | Calculated from thread diameter and length |
Equivalent Grades of Niobium R04210
| Standard / System | Equivalent or Related Designation |
|---|---|
| UNS | R04210 |
| ASTM B392 | Type 2 |
| ASTM Material Description | Commercial Grade Unalloyed Niobium |
| Chemical Symbol | Nb |
| Element | Niobium / Columbium |
| W.Nr. / EN | No direct universally accepted one-to-one equivalent |
| R04200 | Related grade, but Type 1 reactor-grade unalloyed niobium |
| R04251 | Related grade, but niobium-1% zirconium |
| R04261 | Related grade, but commercial niobium-1% zirconium |
Why Choose High Ductility Niobium UNS R04210 Fasteners?
The key reason for selecting High Ductility Niobium UNS R04210 Fasteners is the material's combination of ductility and corrosion-resistant characteristics.
- High Ductility: Niobium is a highly ductile refractory metal. This characteristic supports fabrication into different shapes and specialized fastener geometries.
- Corrosion Resistance: Niobium has strong resistance to corrosion in many chemical environments because of its stable protective oxide layer.
- High-Temperature Capability: Niobium has a very high melting point and retains its importance in specialized high-temperature material applications.
- Specialized Chemical-Service Performance: R04210 fasteners can be considered for chemical-processing equipment and environments where compatibility with aggressive media is a major material-selection factor.
- Custom Manufacturing: We can supply fasteners in different dimensions, thread standards and configurations based on drawings, specifications and application requirements.
Applications of Niobium R04210 Fasteners
Niobium fasteners are used in specialized industries where material compatibility is more important than the cost advantages offered by conventional fastener materials.
Common application areas include:
- Chemical processing equipment
- Corrosive-service assemblies
- Specialized heat-treatment equipment
- High-temperature industrial systems
- Process equipment
- Laboratory and research equipment
- Specialized fabrication
- Pharmaceutical and chemical equipment
- Refractory-metal assemblies
- Custom engineering applications
Actual suitability should always be evaluated against the operating temperature, chemical environment, mechanical loading, joining method and applicable engineering specification.
Niobium R04210 Fasteners Supplier in India
As a Niobium R04210 Fasteners Supplier, we support industrial buyers requiring specialized refractory-metal fastening products. Our supply range includes bolts, studs, screws, socket head cap screws, nuts, flat washers and custom-machined fasteners.
We focus on matching the supplied product with the required UNS designation, ASTM specification, dimensions, thread form and application requirements.
For custom orders, buyers can share drawings, dimensional specifications, material requirements and quantity so that the appropriate manufacturing route can be determined.
Niobium R04210 Fasteners Exporter to UAE
We supply Niobium R04210 Fasteners for export to the UAE and other international markets. Export orders can be prepared according to project specifications, packing requirements and agreed documentation.
Our Niobium R04210 Fasteners Exporter to UAE service is suitable for distributors, engineering companies, process-equipment manufacturers, contractors and industrial procurement teams requiring specialized niobium fastening components.
International orders can include relevant material documentation and inspection requirements according to the purchase order.
Manufacturing of Niobium R04210 Fasteners
Ordering Niobium R04210 Fasteners
When requesting a quotation, provide the UNS R04210 designation, ASTM specification, fastener type, size, thread standard, quantity and delivery destination.
For custom products, technical drawings or dimensional specifications can help us determine the required manufacturing details.
Whether you require Niobium R04210 Socket Head Cap Screws, Niobium R04210 Flat Washers, bolts, studs or custom fasteners, we can discuss the required configuration and supply requirements.
Contact us with your drawings or specifications to enquire about Niobium R04210 Fasteners, pricing, availability and export requirements.

