Niobium R04200 Fasteners are high-purity, reactor-grade unalloyed niobium fasteners manufactured from UNS R04200 Type 1 material. ASTM B392 covers wrought niobium and niobium alloy bar, rod, and wire and identifies R04200 as reactor-grade unalloyed niobium. These fasteners provide excellent corrosion resistance, good ductility, high melting temperature, and controlled impurity levels. Common products include Niobium R04200 Hex Head Bolts, Socket Head Cap Screws, Stud Bolts, threaded rods, nuts, washers, and custom fasteners for specialized chemical, nuclear, aerospace, vacuum, and high-temperature applications.
What Are Niobium R04200 Fasteners?
Niobium R04200 Fasteners are specialized fastening components manufactured from UNS R04200, a reactor-grade unalloyed niobium material covered by ASTM B392. The grade is valued where high material purity, corrosion resistance, ductility, and specialized high-temperature performance are important.
ASTM B392-26 identifies R04200 Type 1 as reactor-grade unalloyed niobium. The same specification also covers R04210 commercial-grade unalloyed niobium, R04251 reactor-grade niobium containing approximately 1% zirconium, and R04261 commercial-grade niobium containing approximately 1% zirconium.
We supply ASTM B392 UNS R04200 Niobium Fasteners in standard and custom configurations. Depending on the application, available products include bolts, screws, studs, threaded rods, nuts, washers, and other machined fastening components.
Table of Contents
- ➤ What Are Niobium R04200 Fasteners?
- ➤ Niobium R04200 Fasteners Specifications
- ➤ Types of Niobium R04200 Fasteners
- ➤ Chemical Composition of UNS R04200 Niobium
- ➤ Mechanical Properties of Niobium R04200 Fasteners
- ➤ Physical Properties of Niobium R04200
- ➤ Niobium R04200 Fasteners Weight Chart
- ➤ Equivalent Grades of Niobium R04200
- ➤ Applications of Niobium R04200 Fasteners
- ➤ Why Choose Our Niobium R04200 Fasteners?
- ➤ Niobium R04200 Fasteners Manufacturer and Exporter
Niobium R04200 Fasteners Specifications
| Specification | Niobium R04200 Fasteners |
|---|---|
| Material | Unalloyed Niobium |
| UNS | R04200 |
| ASTM Grade | B392 Type 1 |
| Grade Description | Reactor-grade unalloyed niobium |
| Product Type | Bolts, screws, studs, rods, nuts, washers |
| Manufacturing | Machined / formed according to requirements |
| Thread Type | Metric, UNC, UNF and custom |
| Thread Form | As specified |
| Size | Standard and custom sizes |
| Surface Finish | Machined, polished or specified finish |
| Condition | Annealed / cold worked as specified |
| Density | Approx. 8.57–8.60 g/cm³ |
| Melting Point | Approx. 2468°C |
| Material Standard | ASTM B392 |
| Inspection | As specified by purchase order |
| Documentation | Material certificates available as required |
Types of Niobium R04200 Fasteners
➤ Niobium R04200 Hex Head Bolts
Niobium R04200 Hex Head Bolts have a six-sided external head that allows installation with a wrench or socket. They can be manufactured in different diameters, lengths, thread configurations, and head dimensions according to the application.
➤ Niobium R04200 Socket Head Cap Screws
Niobium R04200 Socket Head Cap Screws have a cylindrical head with an internal hexagonal drive. Their compact head design makes them useful for assemblies where installation space is restricted.
➤ Niobium R04200 Stud Bolts
Niobium R04200 Stud Bolts are threaded fasteners generally used where both ends require threaded engagement. They can be supplied in different lengths and thread configurations.
➤ Niobium R04200 Threaded Rods
Threaded rods are available in specified lengths and thread forms for supports, fixtures, laboratory equipment, and specialized assemblies.
➤ Niobium R04200 Nuts and Washers
Matching R04200 nuts and washers can be supplied for applications requiring a compatible niobium fastening system.
➤ Custom Niobium R04200 Fasteners
Custom fasteners can be manufactured according to engineering drawings, dimensions, tolerances, thread specifications, head styles, and application requirements.
Chemical Composition of UNS R04200 Niobium
| Element | Maximum Content, % |
|---|---|
| Niobium (Nb) | Balance |
| Carbon (C) | 0.010 |
| Nitrogen (N) | 0.010 |
| Oxygen (O) | 0.015 |
| Hydrogen (H) | 0.0015 |
| Tantalum (Ta) | 0.100 |
| Zirconium (Zr) | 0.020 |
| Iron (Fe) | 0.005 |
| Silicon (Si) | 0.005 |
| Tungsten (W) | 0.030 |
| Nickel (Ni) | 0.005 |
| Molybdenum (Mo) | 0.010 |
| Hafnium (Hf) | 0.020 |
| Titanium (Ti) | 0.020 |
Mechanical Properties of Niobium R04200 Fasteners
| Mechanical Property | R04200 Reference Value |
|---|---|
| Ultimate Tensile Strength | ≥125 MPa |
| Yield Strength, 0.2% Offset | ≥73 MPa |
| Elongation | ≥20% |
| Modulus of Elasticity | Approx. 103 GPa |
| Hardness | Dependent on condition |
| Condition | Annealed / cold worked as specified |
Physical Properties of Niobium R04200
| Physical Property | Approximate Value |
|---|---|
| Density | 8.57–8.60 g/cm³ |
| Modulus of Elasticity | 103 GPa |
| Thermal Conductivity | 52.3 W/m·K |
| Melting Point | 2468°C |
| Coefficient of Thermal Expansion | 7.1 µm/m·°C |
| Electrical Resistivity | Approx. 1.51 × 10⁻⁵ Ω·cm |
Niobium R04200 Fasteners Weight Chart
| Product | Size | Approx. Weight* |
|---|---|---|
| Hex Bolt | M6 × 25 mm | 5–8 g |
| Hex Bolt | M8 × 30 mm | 12–18 g |
| Hex Bolt | M10 × 40 mm | 28–40 g |
| Hex Bolt | M12 × 50 mm | 50–70 g |
| Hex Bolt | M16 × 60 mm | 105–140 g |
| Stud Bolt | M10 × 100 mm | 55–70 g |
| Stud Bolt | M12 × 150 mm | 125–155 g |
| Threaded Rod | M10 × 1000 mm | 520–600 g |
| Threaded Rod | M12 × 1000 mm | 750–850 g |
Equivalent Grades of Niobium R04200
| Standard / Designation | Grade / Description | Relationship to R04200 |
|---|---|---|
| UNS | R04200 | Direct designation |
| ASTM | B392 Type 1 | Direct material specification designation |
| ASTM B392 | R04210 Type 2 | Commercial-grade unalloyed niobium – not a direct equivalent |
| ASTM B392 | R04251 Type 3 | Reactor-grade Nb-1% Zr – different alloy |
| ASTM B392 | R04261 Type 4 | Commercial-grade Nb-1% Zr – different alloy |
| Commercial Description | Niobium 4200 / Type 1 | Common material designation |
| Material Family | Unalloyed Niobium | Material family |
Applications of Niobium R04200 Fasteners
Why Choose Our Niobium R04200 Fasteners?
- ASTM B392 Material Focus: We supply ASTM B392 UNS R04200 Niobium Fasteners against defined material and dimensional requirements.
- Custom Manufacturing: We can support requirements for custom diameters, lengths, thread forms, head styles, and specialized configurations.
- Technical Documentation: Material certificates, dimensional inspection reports, and other documentation can be arranged according to project requirements.
- Specialized Refractory-Metal Supply: Our product range includes specialized refractory and high-performance materials for demanding industrial applications.
- Export Support: We support international enquiries, including requirements for Niobium R04200 Fasteners Exporter to USA, subject to the agreed specification and shipping requirements.
Niobium R04200 Fasteners Manufacturer and Exporter
As a Niobium R04200 Fasteners Manufacturer and Exporter, we supply UNS R04200 Niobium Bolts, Niobium R04200 Hex Head Bolts, Socket Head Cap Screws, Stud Bolts, threaded rods, nuts, washers, and custom fasteners.
For a quotation, share the required:
- Fastener type
- UNS/material grade
- ASTM specification
- Diameter
- Length
- Thread specification
- Quantity
- Drawing, if applicable
- Operating temperature
- Application
- Inspection and certification requirements
This information allows us to review the requirement and offer the appropriate Niobium R04200 Fasteners for the intended service.
Request a Quote for Niobium R04200 Fasteners
Need ASTM B392 UNS R04200 Niobium Fasteners for a specialized application? We supply Niobium R04200 Hex Head Bolts, Socket Head Cap Screws, Stud Bolts, threaded rods, nuts, washers, and custom fasteners.
Send your drawing, dimensions, quantity, thread specification, material requirement, and certification requirements to discuss your Niobium R04200 Fasteners requirement.
