Tantalum Ta-Nb30 Fasteners are specialized refractory-metal fasteners manufactured from a tantalum-niobium alloy containing approximately 70% tantalum and 30% niobium. Also known as Ta-30Nb Fasteners, these fasteners are selected for applications requiring the characteristic corrosion resistance and specialized performance of tantalum-based alloys.

We supply Tantalum 30 Niobium Bolts, Ta-30%Nb Screws and Fasteners, Ta-Nb30 studs, nuts, washers, threaded rods and Ta-Nb30 Socket Head Cap Screws in standard and custom configurations. Metric sizes from M2 to M36 Ta-Nb30 Fasteners can be supplied subject to material availability, manufacturing requirements and customer drawings.

What Are Tantalum Ta-Nb30 Fasteners?

Tantalum Ta-Nb30 Fasteners are refractory-metal fasteners made from a nominal 70% tantalum and 30% niobium alloy. They include bolts, screws, studs, nuts, washers, threaded rods and socket head cap screws. Ta-Nb30 fasteners are used for specialized chemical, high-temperature and corrosion-resistant applications and can be manufactured in metric and custom sizes according to drawings and agreed material specifications.

tantalum-ta-nb30-fasteners

What Is Ta-Nb30 Alloy?

Ta-Nb30, also written as Ta-30Nb or TaNb30, is a tantalum-niobium alloy with a nominal composition of approximately 70% tantalum and 30% niobium. The alloy belongs to the refractory-metal family and is considered for demanding engineering applications where tantalum-based material performance is required.

The 30% niobium designation is particularly important when ordering because Ta-Nb30 should not be confused with other tantalum alloys such as Ta-2.5W, Ta-10W or Ta-40Nb.

For comparison, ASTM B365 identifies UNS R05240 as a 60% tantalum/40% niobium alloy, while R05252 is Ta-2.5W and R05255 is Ta-10W.

Tantalum Ta-Nb30 Fasteners Specifications

Specification Details
Product NameTantalum Ta-Nb30 Fasteners
AlloyTantalum-Niobium
Nominal Composition70% Ta / 30% Nb
Common DesignationsTa-Nb30, Ta-30Nb, TaNb30
Material TypeRefractory Metal Alloy
Fastener TypesBolts, screws, studs, nuts, washers, threaded rods
Socket Head TypeTa-Nb30 Socket Head Cap Screws
Size RangeM2 to M36; custom sizes on request
Thread TypesMetric, UNC, UNF and custom
Head StylesHex, socket head, countersunk and custom
ManufacturingMachined / formed as applicable
SurfaceAs manufactured / polished / specified finish
Material DocumentationAvailable as agreed
InspectionDimensional and material verification as required
ApplicationChemical, specialty engineering and refractory-metal applications

Types of Tantalum Ta-Nb30 Fasteners

We can supply different fastener configurations according to component design, installation requirements and application.

➤ Ta-Nb30 Bolts

Tantalum 30 Niobium Bolts are available in different head styles, diameters and lengths. Hex bolts can be used where conventional wrench installation is required.

➤ Ta-Nb30 Screws

Ta-Nb30 screws can be manufactured with different drive and head configurations for equipment assemblies and compact installations.

➤ Ta-Nb30 Socket Head Cap Screws

Tantalum Ta-Nb30 Socket Head Cap Screws feature an internal hexagonal drive and compact cylindrical head. They are suitable for assemblies where installation space around the fastener is limited.

➤ Ta-Nb30 Stud Bolts

Refractory Ta-30Nb Bolts and Studs can be manufactured as single-end or double-end studs according to the required thread length and assembly configuration.

➤ Ta-Nb30 Nuts and Washers

Matching nuts and washers can be supplied for complete fastening assemblies, subject to dimensional and material requirements.

➤ Ta-Nb30 Threaded Rods

Ta-Nb30 threaded rods can be supplied in specified lengths and thread forms for applications requiring continuous threaded engagement.

Chemical Composition of Tantalum Ta-Nb30

The nominal composition of Ta-Nb30 is approximately:

Element Nominal Composition
Tantalum (Ta)70%
Niobium (Nb)30%
Other ElementsControlled residuals

Mechanical Properties of Ta-Nb30 Fasteners

Mechanical Property Typical / Reference Information
Tensile StrengthDepends on material condition and manufacturing route
Yield StrengthDepends on material condition and fastener size
ElongationDepends on material condition and test method
HardnessCondition-dependent
DensityApproximately 16.6–16.7 g/cm³ as a reference for Ta-Nb alloy material
Material ConditionAs specified / supplied condition
TestingTensile and other tests can be specified by order

Ta-Nb30 Fasteners Weight Chart

Diameter Approx. Weight per 100 mm
2 mm5.23 g
3 mm11.77 g
4 mm20.92 g
5 mm32.69 g
6 mm47.08 g
8 mm83.69 g
10 mm130.77 g
12 mm188.31 g
16 mm334.77 g
20 mm523.08 g
24 mm753.23 g
30 mm1.177 kg
36 mm1.695 kg

Metric M2 to M36 Ta-Nb30 Fasteners

We can review requirements for Metric M2 to M36 Ta-Nb30 Fasteners, including:

  • M2 Ta-Nb30 Fasteners
  • M3 Ta-Nb30 Fasteners
  • M4 Ta-Nb30 Fasteners
  • M5 Ta-Nb30 Fasteners
  • M6 Ta-Nb30 Fasteners
  • M8 Ta-Nb30 Fasteners
  • M10 Ta-Nb30 Fasteners
  • M12 Ta-Nb30 Fasteners
  • M16 Ta-Nb30 Fasteners
  • M20 Ta-Nb30 Fasteners
  • M24 Ta-Nb30 Fasteners
  • M30 Ta-Nb30 Fasteners
  • M36 Ta-Nb30 Fasteners

Custom diameters, lengths, thread pitches and head configurations can also be evaluated against customer drawings.

Equivalent Grades of Tantalum Ta-Nb30

Material / Designation Approximate Composition Relationship to Ta-Nb30
Ta-Nb30 / Ta-30Nb70% Ta / 30% NbTarget alloy
UNS R0524060% Ta / 40% NbDifferent Ta-Nb alloy; not equivalent
UNS R0525297.5% Ta / 2.5% WDifferent tantalum-tungsten alloy
UNS R0525590% Ta / 10% WDifferent tantalum-tungsten alloy
UNS R05200Unalloyed tantalumDifferent material
UNS R05400Unalloyed tantalumDifferent material

Applications of Tantalum Ta-Nb30 Fasteners

applications-of-tantalum-ta-nb30-fasteners

Why Choose Our Ta-30Nb Fasteners?

  • Specialized Material Sourcing: Ta-Nb30 is a specialized refractory alloy. We review the required chemistry and product configuration before confirming supply.
  • Custom Manufacturing: We can evaluate Ta-30Nb Bolts, Studs, Screws, Socket Head Cap Screws, Nuts, Washers and Threaded Rods according to drawings and dimensional requirements.
  • Metric and Custom Sizes: Requirements from M2 to M36 can be considered, along with custom lengths, thread pitches, head styles and non-standard dimensions.
  • Material Documentation: Material certificates and inspection documentation can be provided according to the agreed purchase requirement.
  • International Supply: We support international enquiries as a Ta-30Nb Alloy Bolts Supplier in India and Tantalum Ta-Nb30 Fasteners Exporter to USA, along with supply enquiries from other international markets.

Tantalum Ta-Nb30 Fasteners Supplier in India

We supply Tantalum Ta-Nb30 Fasteners for specialized industrial requirements, including bolts, screws, studs, nuts, washers, threaded rods and socket head cap screws.

When requesting a quotation, provide the fastener type, diameter, length, thread specification, quantity, drawing, required alloy chemistry and certification requirements. This allows us to review the requirement accurately and offer the appropriate Ta-Nb30 material and configuration.

For applications where a customer specifically requires an ASTM material standard, the exact ASTM grade should be stated rather than assuming that ASTM B365 automatically covers Ta-Nb30.

Contact us for Ta-Nb30 fasteners in standard or custom dimensions and discuss your refractory-alloy fastening requirement with our team.


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