Niobium R04295 Fasteners are specialty fasteners manufactured from UNS R04295 C103 niobium-hafnium-titanium alloy, commonly designated Nb-10Hf-1Ti. The alloy contains approximately 10% hafnium and 1% titanium with niobium as the balance. ASTM B655/B655M covers R04295 niobium-hafnium alloy bar and wire and specifies chemical and mechanical requirements. R04295 is used for demanding high-temperature, aerospace, space and propulsion applications where low density, high-temperature strength and useful ductility are required.
What Are Niobium R04295 Fasteners?
Niobium R04295 Fasteners are precision fastening components produced from C103 niobium-hafnium alloy. UNS R04295 is a niobium-base alloy containing approximately 10% hafnium and 1% titanium, developed for applications requiring performance under severe thermal conditions. ASTM B655/B655M identifies R04295 as the material covered for niobium-hafnium bar and wire.
We supply Niobium R04295 Bolts, Screws, Studs, Nuts, Washers and Continuous Threaded Rods in standard and customized configurations. Components can be manufactured according to customer drawings, dimensions, thread requirements and technical specifications.
C103 is particularly associated with aerospace and space applications. Its combination of high-temperature capability, relatively low density and ductility makes it useful in specialized propulsion and thermal environments.
ASTM B655 UNS R04295 Niobium Fasteners
ASTM B655/B655M is the key material specification for R04295 niobium-hafnium alloy bar and wire. ASTM states that the alloy is approximately 10% hafnium and 1% titanium and requires chemical composition and mechanical properties to conform to specified requirements. The standard includes room-temperature tension, elevated-temperature tension and chemical testing.
For finished fasteners, the material can be supplied from suitable ASTM B655 R04295 bar, rod or wire and machined into the required configuration.
Typical procurement information can include:
- UNS designation: R04295
- Alloy designation: C103
- Composition: Nb-10Hf-1Ti
- Material specification: ASTM B655/B655M
- Diameter
- Overall length
- Thread diameter and pitch
- Thread standard
- Head configuration
- Surface condition
- Heat-treatment or annealing condition
- Inspection requirements
- Material test certification
Important: ASTM B655 should not be presented as a standalone finished-fastener dimensional standard. It is primarily a material/product-form specification for R04295 bar and wire. The finished fastener requirements should be defined separately in the purchase order or drawing.
Table of Contents
- ➤ What Are Niobium R04295 Fasteners?
- ➤ ASTM B655 UNS R04295 Niobium Fasteners
- ➤ Niobium R04295 Fasteners Specifications
- ➤ Types of Niobium R04295 Fasteners
- ➤ Chemical Composition of Niobium R04295
- ➤ Mechanical Properties of Niobium R04295
- ➤ Physical Properties of C103 Niobium Alloy
- ➤ Manufacturing of Niobium R04295 Fasteners
- ➤ Applications of Niobium R04295 Fasteners
- ➤ Advantages of Niobium R04295 Fasteners
- ➤ Niobium R04295 Fasteners Weight Chart
- ➤ Equivalent Grades and Related Designations of R04295
- ➤ Niobium R04295 Fasteners Exporter to Middle East
- ➤ Why Choose Us for Niobium R04295 Fasteners?
Niobium R04295 Fasteners Specifications
| Specification | Details |
|---|---|
| Product | Niobium R04295 Fasteners |
| UNS | R04295 |
| Common Alloy | C103 |
| Alloy Designation | Nb-10Hf-1Ti |
| Material Type | Niobium-Hafnium-Titanium Alloy |
| Base Metal | Niobium |
| Material Standard | ASTM B655/B655M |
| Product Forms Under ASTM B655 | Bar and Wire |
| Fastener Forms | Bolts, Screws, Studs, Threaded Rods, Nuts, Washers |
| Manufacturing | CNC Precision Machining |
| Threads | Metric, UNC, UNF or Custom |
| Size | As per drawing / customer requirement |
| Condition | As specified |
| Inspection | Dimensional / material / testing as required |
| Certification | MTC and inspection documentation as required |
ASTM's current standards listing identifies B655/B655M-25 as the specification for niobium-hafnium alloy bar and wire.
Types of Niobium R04295 Fasteners
We manufacture and supply different C103 fastening configurations according to application and drawing requirements.
➤ Niobium R04295 Bolts
Niobium R04295 Bolts are precision-machined for high-temperature and specialized mechanical assemblies. Hex-head and customized bolt configurations can be produced according to drawings.
➤ Niobium R04295 Screws
Niobium R04295 Screws are available with different head styles, thread sizes and lengths. They can be produced for aerospace, space and research equipment.
➤ Niobium R04295 Stud Bolts
Stud bolts provide threaded engagement at both ends and can be manufactured with customized thread lengths and overall dimensions.
➤ Niobium R04295 Continuous Threaded Rod
Niobium R04295 Continuous Threaded Rod is manufactured with continuous external threading along the specified length. Diameter, thread pitch and cut length can be customized.
➤ Niobium R04295 Nuts
Matching nuts can be supplied for specialized C103 assemblies where material compatibility is required.
➤ Niobium R04295 Washers
C103 washers can be manufactured to specified outside diameter, inside diameter and thickness.
➤ Custom R04295 Fasteners
Non-standard C103 components can be produced according to customer drawings, samples or dimensional specifications.
Chemical Composition of Niobium R04295
| Element | Typical / Specification Range, % |
|---|---|
| Niobium (Nb) | Balance |
| Hafnium (Hf) | 9.0–11.0 |
| Titanium (Ti) | 0.7–1.3 |
| Zirconium (Zr) | ≤ 0.7 |
| Tungsten (W) | ≤ 0.5 |
| Tantalum (Ta) | ≤ 0.5 |
| Carbon (C) | ≤ 0.015 |
| Oxygen (O) | Controlled |
| Nitrogen (N) | Controlled |
| Hydrogen (H) | Controlled |
Mechanical Properties of Niobium R04295
| Property | Reference Value / Requirement |
|---|---|
| Tensile Strength | Product-size and condition dependent |
| Yield Strength | Product-size and condition dependent |
| Elongation | Product-size and condition dependent |
| Test Condition | Room temperature / elevated temperature |
| Material Condition | Annealed, where specified |
| High-Temperature Performance | Suitable for demanding high-temperature applications |
| Density | Approx. 8.85 g/cm³ |
| Melting Point | Approx. 2350°C |
| High-Temperature Application | Up to approximately 1480°C in specific C103 applications |
Physical Properties of C103 Niobium Alloy
| Property | Approximate Value |
|---|---|
| Alloy | C103 |
| UNS | R04295 |
| Density | 8.85 g/cm³ |
| Density | 0.320 lb/in³ |
| Melting Point | 2350°C |
| Melting Point | 4260°F |
| Nominal Alloy | Nb-10Hf-1Ti |
Manufacturing of Niobium R04295 Fasteners
Applications of Niobium R04295 Fasteners
C103 niobium alloy is particularly associated with demanding aerospace and space applications. Published technical data identifies applications including rocket and jet propulsion, spacecraft and launch-vehicle components.
Potential applications include:
- Aerospace propulsion systems
- Rocket engine components
- Spacecraft assemblies
- Satellite equipment
- High-temperature propulsion hardware
- Jet propulsion components
- Research and development equipment
- Thermal testing systems
- Specialized defense hardware
- High-temperature mechanical assemblies
Advantages of Niobium R04295 Fasteners
- High-temperature capability: C103 is used in demanding high-temperature aerospace and propulsion environments. Published data reports strength retention in high-temperature applications.
- Low density for a refractory alloy: With a density of approximately 8.85 g/cm³, C103 is lighter than several other refractory metals.
- Useful ductility: C103 is valued for its combination of high-temperature capability and ductility.
- Specialized aerospace suitability: The alloy has established applications in spacecraft, launch vehicles and rocket propulsion.
- Custom machinability: R04295 material can be precision-machined into specialized fastening geometries.
Niobium R04295 Fasteners Weight Chart
| Nominal Diameter | Approx. Weight per 100 mm Solid Length |
|---|---|
| 3 mm | 0.63 g |
| 4 mm | 1.11 g |
| 5 mm | 1.74 g |
| 6 mm | 2.50 g |
| 8 mm | 4.45 g |
| 10 mm | 6.95 g |
| 12 mm | 10.02 g |
| 16 mm | 17.81 g |
| 20 mm | 27.80 g |
| 25 mm | 43.42 g |
| 30 mm | 62.45 g |
Equivalent Grades and Related Designations of R04295
| Designation | Identification |
|---|---|
| UNS R04295 | Niobium-Hafnium Alloy |
| C103 | Common alloy designation |
| C-103 | Alternative C103 designation |
| Nb-10Hf-1Ti | Composition-based designation |
| ASTM B655/B655M | Niobium-Hafnium Alloy Bar and Wire |
| ASTM B652/B652M | R04295 Niobium-Hafnium Alloy Ingots |
| ASTM F3635 | R04295 additive-manufactured finished parts for spaceflight |
| AMS 7852 | Related C103 sheet/plate aerospace specification — product-form specific |
| AMS 7857 | Related C103 bar/rod/wire aerospace specification |
Niobium R04295 Fasteners Exporter to Middle East
We supply Niobium R04295 Fasteners to Middle East markets for specialized engineering and industrial requirements.
Our supply range includes:
- Niobium R04295 Bolts
- Niobium R04295 Screws
- C103 Stud Bolts
- Niobium R04295 Continuous Threaded Rod
- Niobium Nuts
- Niobium Washers
- Custom C103 Fasteners
- Drawing-based fasteners
We can support export requirements for UAE, Saudi Arabia, Qatar, Oman, Kuwait and other Middle Eastern markets, subject to order requirements and shipping arrangements.
Customers can provide a drawing or technical specification containing the required UNS grade, ASTM material standard, dimensions, thread details, quantity and inspection requirements.
Why Choose Us for Niobium R04295 Fasteners?
We focus on supplying specialty fasteners according to the technical requirements of each application.
- ASTM specification-based material sourcing
- UNS R04295 / C103 material
- Custom dimensions
- Metric and imperial threads
- Precision-machined components
- Small and bulk quantities
- Drawing-based manufacturing
- Material certification
- Inspection documentation
- Export packaging
- Middle East export support
For specialty refractory-metal fasteners, providing the correct material designation and product-form specification is essential. We therefore review the technical requirement before production rather than treating all C103 designations as identical.
Request a Quote for Niobium R04295 Fasteners
Looking for Niobium R04295 Fasteners, UNS R04295 Fasteners, Nb-10Hf-1Ti Fasteners or C103 Niobium Screws?
Send us your drawing, dimensions, thread specification, quantity, material standard and delivery requirement. We can review the requirement and offer suitable R04295 bolts, screws, studs, nuts, washers or continuous threaded rods.
Get in touch with us for Niobium R04295 Fasteners and customized C103 fastening components.
