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.

tantalum-ta-nb3-fasteners

Tantalum Ta-Nb3 Fasteners Specifications

Specification Details
ProductTantalum Ta-Nb3 Fasteners
MaterialTantalum-Niobium Alloy
Common DesignationTa-Nb3 / Ta-3Nb / TaNb3
Nominal CompositionApproximately 97% Ta + 3% Nb
Niobium RangeApproximately 2.5–3.5%, depending on specification
Standard for Wrought ProductASTM B365 may be applicable
Fastener TypesBolts, Screws, Stud Bolts, U-Bolts
Head StylesHex Head, Socket Head, Customized
Thread TypeMetric / UNC / UNF / Customized
DiameterAs required
LengthAs required
SurfaceAs manufactured / customized
Material ConditionAs specified
InspectionDimensional / material documentation as required
SupplyDomestic 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 StrengthAs per applicable specification / agreed requirement
Yield StrengthAs per applicable specification / agreed requirement
ElongationAs per applicable specification / agreed requirement
HardnessWhere specified
Material ConditionAnnealed / processed condition as required
Grain StructureSpecification dependent
Test TemperatureNormally room temperature unless otherwise specified

Tantalum Ta-Nb3 Fasteners Weight Chart

Nominal Diameter Approx. Shank Weight / 100 mm
6 mm44.5 g
8 mm79.1 g
10 mm123.5 g
12 mm177.9 g
16 mm316.3 g
20 mm494.2 g
24 mm711.6 g
30 mm1,111.9 g

Equivalent Grades of Tantalum Ta-Nb3

Designation Description
Ta-Nb3Tantalum-Niobium alloy
Ta-3NbTantalum with approximately 3% Nb
TaNb3Common material designation
Ta3NbAlternate designation used in material literature
Ta + 3% NbDescriptive composition
Ta Balance + NbComposition 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.


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