Tantalum Ta-Nb40 Fasteners, also known as Ta-40Nb Fasteners, UNS R05240 Fasteners and Tantalum Grade R05240 Fasteners, are specialty fasteners manufactured from a tantalum-niobium alloy containing approximately 60% tantalum and 40% niobium. UNS R05240 is specifically identified by ASTM as a 60% tantalum–40% niobium alloy.
We supply Tantalum Niobium 40% Alloy Fasteners in bolts, screws, nuts, washers, threaded rods, studs, flange stud bolts and U-bolts for applications where exceptional corrosion resistance is required. These fasteners are particularly considered for chemical-processing environments involving aggressive media, including hydrochloric acid under suitable operating conditions.
What Are Tantalum Ta-Nb40 Fasteners?
Tantalum Ta-Nb40 Fasteners are corrosion-resistant fasteners made from UNS R05240 tantalum-niobium alloy, containing approximately 60% tantalum and 40% niobium. Also called Ta-40Nb Fasteners or 60Ta-40Nb Bolts, they provide excellent resistance to many aggressive chemical environments and are used in chemical processing, pharmaceutical equipment, reactors, heat exchangers and specialized piping systems. We supply UNS R05240 bolts, screws, studs, flange stud bolts and U-bolts in customized dimensions according to project requirements.
Table of Contents
- ➤ What Are Tantalum Ta-Nb40 Fasteners?
- ➤ Tantalum Ta-Nb40 Fasteners Specifications
- ➤ Chemical Composition of UNS R05240
- ➤ Mechanical Properties of Tantalum Ta-Nb40 Fasteners
- ➤ Types of Tantalum Ta-Nb40 Fasteners
- ➤ Tantalum Ta-Nb40 Weight Chart
- ➤ Equivalent Grades of Tantalum Ta-Nb40
- ➤ Corrosion Resistance of Ta-40Nb Fasteners
- ➤ Applications of Tantalum Niobium 40% Alloy Fasteners
- ➤ Why Choose Our Ta-Nb40 Fasteners?
Tantalum Ta-Nb40 Fasteners Specifications
The following specification details help buyers identify the required UNS R05240 Fasteners before placing an enquiry.
| Specification | Details |
|---|---|
| Product Name | Tantalum Ta-Nb40 Fasteners |
| Alloy | Tantalum-Niobium |
| Common Designation | Ta-40Nb |
| UNS | R05240 |
| Nominal Composition | 60% Tantalum / 40% Niobium |
| Alternative Name | 60Ta-40Nb |
| Material Type | Tantalum Alloy |
| ASTM Reference | ASTM B365 for rod and wire material |
| Manufacturing | Machined / formed according to product requirements |
| Fastener Forms | Bolts, screws, nuts, studs, washers, U-bolts, threaded rods |
| Thread Type | Metric, UNC, UNF or as specified |
| Head Style | Hex, heavy hex, socket and customized |
| Surface Condition | As manufactured / as specified |
| Size | Custom sizes available |
| Certification | Material test certification available as required |
Chemical Composition of UNS R05240
| Element | Composition, wt.% |
|---|---|
| Tantalum (Ta) | 57.9–65 |
| Niobium (Nb) | 35–42 |
| Tungsten (W) | 0–0.050 |
| Molybdenum (Mo) | 0–0.020 |
| Oxygen (O) | 0–0.020 |
| Carbon (C) | 0–0.010 |
| Nickel (Ni) | 0–0.010 |
| Iron (Fe) | 0–0.010 |
| Nitrogen (N) | 0–0.010 |
| Titanium (Ti) | 0–0.010 |
| Silicon (Si) | 0–0.0050 |
| Hydrogen (H) | 0–0.0015 |
| Tantalum + Niobium | Balance / principal alloy constituents |
Mechanical Properties of Tantalum Ta-Nb40 Fasteners
| Mechanical Property | Typical / Published Value | Unit |
|---|---|---|
| Ultimate Tensile Strength | 275–310 | MPa |
| Yield Strength, 0.2% | 193–207 | MPa |
| Elongation | 25–40 | % |
| Modulus of Elasticity | Approx. 152 | GPa |
| Melting Point | Approx. 2705 | °C |
| Density | Approx. 12.1 | g/cm³ |
Types of Tantalum Ta-Nb40 Fasteners
We supply Ta-40Nb Alloy Fasteners in different configurations to suit equipment, piping and fabrication requirements.
➤ Ta-Nb40 Bolts
60Ta-40Nb Bolts are available in different head styles, diameters, lengths and thread configurations. They can be used for specialized bolted joints where corrosion resistance is a primary material consideration.
➤ Ta-Nb40 Flange Stud Bolts
Tantalum Ta-Nb40 Flange Stud Bolts are designed for flange connections and can be supplied with matching nuts and specified thread dimensions. Stud lengths can be customized according to flange class and joint design.
➤ Ta-Nb40 U-Bolts
Tantalum Ta-Nb40 U-Bolts are used for pipe, tube and equipment support applications where the surrounding environment requires a highly corrosion-resistant alloy.
➤ Other Fastener Forms
Our supply range can also include:
- Hex bolts
- Heavy hex bolts
- Socket head screws
- Machine screws
- Stud bolts
- Threaded rods
- Hex nuts
- Washers
- Flange bolts
- Customized fasteners
Tantalum Ta-Nb40 Weight Chart
| Material Volume | Approx. Weight |
|---|---|
| 1 cm³ | 12.1 g |
| 5 cm³ | 60.5 g |
| 10 cm³ | 121 g |
| 25 cm³ | 302.5 g |
| 50 cm³ | 605 g |
| 100 cm³ | 1.21 kg |
| 250 cm³ | 3.025 kg |
| 500 cm³ | 6.05 kg |
| 1,000 cm³ | 12.1 kg |
Equivalent Grades of Tantalum Ta-Nb40
| Standard / Designation | Equivalent / Reference |
|---|---|
| UNS | R05240 |
| Alloy Designation | Ta-40Nb |
| Alloy Composition | 60Ta-40Nb |
| Alternative Element Name | 60% Tantalum – 40% Columbium |
| ASTM B365 | R05240 alloy grade |
| ASTM B521 | R05240 alloy |
| ASTM B708 | R05240 alloy |
| Common Material Description | Tantalum-Niobium / Tantalum-Columbium |
Corrosion Resistance of Ta-40Nb Fasteners
A major reason for specifying Tantalum Ta-Nb40 Fasteners is their resistance to aggressive chemical environments. Tantalum-based materials are widely selected for demanding corrosion-service applications, while the Ta-Nb40 composition provides a distinct alloy combination compared with commercially pure tantalum.
Hydrochloric Acid Resistant UNS R05240 Bolts may be considered for equipment exposed to hydrochloric acid and related chemical-processing conditions. Actual corrosion performance depends on concentration, temperature, impurities, flow conditions and exposure time.
For critical equipment, the compatibility of the fastener material should therefore be confirmed against the actual process chemistry rather than relying only on a general “acid resistant” designation.
Applications of Tantalum Niobium 40% Alloy Fasteners
Tantalum Niobium 40% Alloy Fasteners are suitable for specialized applications where corrosion resistance and material integrity are important.
Typical applications include:
- Chemical processing equipment
- Hydrochloric acid handling equipment
- Reactors and reaction vessels
- Heat exchangers
- Corrosive process piping
- Pharmaceutical processing equipment
- Specialty laboratory equipment
- Chemical tanks and vessels
- High-temperature process assemblies
- Corrosion-resistant equipment fabrication
The final material selection should consider temperature, chemical concentration, mechanical loading and compatibility with the mating components.
Why Choose Our Ta-Nb40 Fasteners?
We supply UNS R05240 Alloy Bolts and Fasteners for industrial buyers requiring specialized tantalum-niobium materials. Our range includes standard and customized configurations, allowing procurement teams to specify the dimensions and fastener type required for their equipment.
As a Ta-40Nb Alloy Fasteners Stockist and supplier in India, we can support enquiries for bolts, studs, U-bolts, nuts, washers and threaded components.
We can review technical drawings, dimensions, thread requirements, quantities and applicable material standards before confirming the supply. Material documentation and certification can also be provided according to the purchase requirement.
Order UNS R05240 Tantalum Ta-Nb40 Fasteners
If you are looking for Tantalum Ta-Nb40 Fasteners, Ta-40Nb Fasteners, UNS R05240 Fasteners or 60Ta-40Nb Bolts, share your required fastener type, size, length, thread specification, quantity and delivery location with us.
We supply Tantalum Ta-Nb40 Flange Stud Bolts & U-Bolts, screws, studs, nuts, washers and other customized fastener configurations for specialized industrial applications.
For an accurate quotation, provide the drawing or complete dimensional specification along with the required material standard and certification requirements. We can then review the requirement and offer the appropriate UNS R05240 Alloy Bolts for your application.
