Tantalum Ta-Nb3 Fasteners, also called Ta-3Nb Fasteners, are made from a tantalum-niobium alloy containing approximately 3% niobium and tantalum as the balance. The alloy is selected for applications requiring excellent corrosion resistance and chemical stability. We supply Tantalum Ta-Nb3 Hex Head Bolts, Socket Head Cap Screws, Flange Stud Bolts and U-Bolts in standard and customized dimensions for demanding industrial applications.
Tantalum Ta-Nb3 Fasteners
Tantalum Ta-Nb3 Fasteners / Ta-3Nb Fasteners are specialized refractory-metal fasteners manufactured from a tantalum-niobium alloy. TaNb3 is generally identified as a tantalum-based alloy containing approximately 3% niobium. Published material data identifies TaNb3 as approximately 97% tantalum and 3% niobium, while some specifications give the niobium range as 2.5–3.5%.
The main reason for selecting this material is its resistance to aggressive chemical environments. Tantalum itself is known for exceptional corrosion resistance, while alloying with niobium provides a controlled tantalum-niobium material system for specialized applications.
We manufacture, stock and supply Tantalum Ta-Nb3 Fasteners in different configurations, sizes, thread forms and lengths. Our range includes Ta-3Nb Alloy Bolts, Hex Head Bolts, Socket Head Cap Screws, Flange Stud Bolts and U-Bolts.
As a Tantalum Ta-Nb3 Fasteners Manufacturer in Mumbai, we can support customers with standard requirements as well as customized fasteners manufactured according to drawings, dimensions and project specifications.
Table of Contents
- ➤ Tantalum Ta-Nb3 Fasteners
- ➤ Tantalum Ta-Nb3 Fasteners Specifications
- ➤ Types of Tantalum Ta-Nb3 Fasteners
- ➤ Corrosion Resistant Ta-Nb3 Fasteners
- ➤ Chemical Composition of Ta-Nb3 Fasteners
- ➤ Mechanical Properties of Tantalum Ta-Nb3
- ➤ Tantalum Ta-Nb3 Fasteners Weight Chart
- ➤ Equivalent Grades of Tantalum Ta-Nb3
- ➤ Tantalum Ta-Nb3 Fasteners Manufacturer in Mumbai
- ➤ Tantalum Niobium 3% Fasteners Stockist & Exporter
Tantalum Ta-Nb3 Fasteners Specifications
| Specification | Details |
|---|---|
| Product | Tantalum Ta-Nb3 Fasteners |
| Material | Tantalum-Niobium Alloy |
| Common Designation | Ta-Nb3 / Ta-3Nb / TaNb3 |
| Nominal Composition | Approximately 97% Ta + 3% Nb |
| Niobium Range | Approximately 2.5–3.5%, depending on specification |
| Standard for Wrought Product | ASTM B365 may be applicable |
| Fastener Types | Bolts, Screws, Stud Bolts, U-Bolts |
| Head Styles | Hex Head, Socket Head, Customized |
| Thread Type | Metric / UNC / UNF / Customized |
| Diameter | As required |
| Length | As required |
| Surface | As manufactured / customized |
| Material Condition | As specified |
| Inspection | Dimensional / material documentation as required |
| Supply | Domestic and Export |
Types of Tantalum Ta-Nb3 Fasteners
➤ Tantalum Ta-Nb3 Hex Head Bolts
Tantalum Ta-Nb3 Hex Head Bolts feature a six-sided head designed for tightening with a conventional spanner or socket. They are suitable for bolted joints in specialized equipment and corrosive process environments.
➤ Tantalum Ta-Nb3 Socket Head Cap Screws
Tantalum Ta-Nb3 Socket Head Cap Screws have an internal hexagonal drive and compact cylindrical head. They are useful where installation space around the fastener is restricted.
➤ Tantalum Ta-Nb3 Flange Stud Bolts
Tantalum Ta-Nb3 Flange Stud Bolts are used for bolting flange connections. They can be supplied in different diameters and lengths according to flange thickness, nut engagement and joint requirements.
➤ Tantalum Ta-Nb3 U-Bolts
Tantalum Ta-Nb3 U-Bolts are shaped to secure pipes, tubes and other cylindrical components. We can supply customized leg lengths, thread lengths, inside dimensions and diameters according to application requirements.
➤ Corrosion Resistant Ta-Nb3 Fasteners
One of the principal reasons for using Corrosion Resistant Ta-Nb3 Fasteners is their tantalum-rich composition. Tantalum is particularly valued for resistance to many aggressive chemical environments, making tantalum-based materials useful in specialized chemical-processing applications.
➤ Other Ta-3Nb Fasteners
Depending on the application, we can also discuss customized tantalum-niobium fastener configurations, including special bolts, screws, studs, nuts and other threaded components. Published tantalum-niobium product ranges include alloy bolts and nuts as well as rod and wire products used for machining.
Chemical Composition of Ta-Nb3 Fasteners
| Element | Typical / Published Requirement |
|---|---|
| Tantalum (Ta) | Balance |
| Niobium (Nb) | 2.5–3.5% |
| Iron (Fe) | ≤ 0.005% |
| Silicon (Si) | ≤ 0.005% |
| Nickel (Ni) | ≤ 0.004% |
| Tungsten (W) | ≤ 0.005% |
| Molybdenum (Mo) | ≤ 0.005% |
| Titanium (Ti) | ≤ 0.004% |
| Oxygen (O) | ≤ 0.012% |
| Carbon (C) | ≤ 0.005% |
| Hydrogen (H) | ≤ 0.0015% |
| Nitrogen (N) | ≤ 0.005% |
Mechanical Properties of Tantalum Ta-Nb3
| Mechanical Property | Requirement |
|---|---|
| Tensile Strength | As per applicable specification / agreed requirement |
| Yield Strength | As per applicable specification / agreed requirement |
| Elongation | As per applicable specification / agreed requirement |
| Hardness | Where specified |
| Material Condition | Annealed / processed condition as required |
| Grain Structure | Specification dependent |
| Test Temperature | Normally room temperature unless otherwise specified |
Tantalum Ta-Nb3 Fasteners Weight Chart
| Nominal Diameter | Approx. Shank Weight / 100 mm |
|---|---|
| 6 mm | 44.5 g |
| 8 mm | 79.1 g |
| 10 mm | 123.5 g |
| 12 mm | 177.9 g |
| 16 mm | 316.3 g |
| 20 mm | 494.2 g |
| 24 mm | 711.6 g |
| 30 mm | 1,111.9 g |
Equivalent Grades of Tantalum Ta-Nb3
| Designation | Description |
|---|---|
| Ta-Nb3 | Tantalum-Niobium alloy |
| Ta-3Nb | Tantalum with approximately 3% Nb |
| TaNb3 | Common material designation |
| Ta3Nb | Alternate designation used in material literature |
| Ta + 3% Nb | Descriptive composition |
| Ta Balance + Nb | Composition basis |
Published tantalum-niobium material data lists TaNb3, TaNb20, TaNb30 and TaNb40 as tantalum-niobium alloy grades, with TaNb3 representing approximately 3% niobium composition.
Important: Ta-Nb3 should not automatically be substituted with UNS R05240 / Ta-40Nb. Ta-40Nb is a different alloy containing approximately 40% niobium, so the two materials should not be treated as interchangeable without engineering approval.
Tantalum Ta-Nb3 Fasteners Manufacturer in Mumbai
As a Tantalum Ta-Nb3 Fasteners Manufacturer in Mumbai, we supply specialized tantalum-niobium fastening products to engineering companies, equipment manufacturers, fabricators, maintenance buyers and industrial customers.
We can manufacture or supply Tantalum Ta-Nb3 Hex Head Bolts, Tantalum Ta-Nb3 Socket Head Cap Screws, Flange Stud Bolts and U-Bolts according to required dimensions.
For customized requirements, customers can provide a drawing, specification, fastener size, thread details, quantity and required material documentation. This helps us match the product to the intended application instead of supplying a generic fastener.
Tantalum Niobium 3% Fasteners Stockist & Exporter
As a Tantalum Niobium 3% Fasteners Stockist, we support requirements for different dimensions and fastener configurations. Availability depends on size, quantity and production requirements.
We also work as a Tantalum Ta-Nb3 Fasteners Exporter, supplying products for international industrial requirements. Export orders can be prepared according to agreed packing, marking, documentation and inspection requirements.
For customers looking for a Ta-3Nb Alloy Bolts Supplier in India, we can provide quotations based on size, quantity, material requirements and delivery destination.
Order Tantalum Ta-Nb3 Fasteners
If you need Tantalum Ta-Nb3 Fasteners, send us your required diameter, length, fastener type, thread specification, quantity and material standard. Drawings can also be provided for customized requirements.
We supply Ta-3Nb Alloy Bolts, Tantalum Ta-Nb3 Hex Head Bolts, Socket Head Cap Screws, Flange Stud Bolts and U-Bolts for specialized industrial applications.
Contact us for Tantalum Ta-Nb3 Fasteners price, availability, technical specifications, customization and export requirements.

