Tantalum Ta-Nb20 Fasteners, also known as Ta-20Nb Fasteners, are specialty tantalum-niobium alloy fastening components containing approximately 20% niobium, with tantalum forming the balance. These fasteners are selected for applications requiring corrosion resistance and the specialized properties of tantalum-niobium alloys.

We supply Tantalum Niobium 20% Alloy Fasteners in different sizes, configurations and thread forms. Our range includes Tantalum 20 Niobium Bolts, Ta-20%Nb Screws, nuts, studs, threaded rods, washers and customized fasteners for specialized industrial applications.

The tantalum-rich composition makes Ta-20Nb relevant to chemical processing and other corrosive-service applications where material compatibility is an important consideration. We can supply components according to customer drawings, dimensions, thread requirements and applicable material specifications.

What Are Tantalum Ta-Nb20 Fasteners?

Tantalum Ta-Nb20 Fasteners are specialty fasteners manufactured from a tantalum-niobium alloy containing approximately 20% niobium and tantalum as the balance. Also called Ta-20Nb Fasteners, they are used in specialized corrosive-service applications, including chemical processing equipment, process assemblies, heat exchangers and other industrial systems requiring tantalum-niobium alloy components.

tantalum-ta-nb20-fasteners

Tantalum Ta-Nb20 Fasteners Specifications

Specification Details
Product NameTantalum Ta-Nb20 Fasteners
Common DesignationTa-20Nb / Ta20Nb
Alloy FamilyTantalum-Niobium Alloy
Nominal NiobiumApproximately 20%
TantalumBalance
Product FormsBolts, screws, nuts, studs, threaded rods, washers
Thread FormsMetric, UNC, UNF and customized
SizeAs per drawing or customer requirement
ManufacturingMachined / formed / customized
Material ConditionAs specified
SurfaceAs manufactured / machined / customized
CertificationMTC and inspection documents as required
ApplicationsChemical processing, corrosive service and specialty equipment

Types of Tantalum Ta-Nb20 Fasteners

We supply different types of Ta-20%Nb Screws and Fasteners for specialized fastening requirements.

➤ Ta-20Nb Bolts

Ta-20Nb bolts can be supplied in standard or customized head styles and dimensions for specialized industrial assemblies.

➤ Ta-20Nb Screws

Machine screws, socket head screws and other screw configurations can be produced according to required dimensions and thread specifications.

➤ Ta-20Nb Stud Bolts

Stud bolts are suitable for flanged and equipment connections where a threaded fastening arrangement is required.

➤ Ta-20Nb Nuts

Matching Ta-20Nb nuts can be supplied for compatible threaded assemblies.

➤ Ta-20Nb Threaded Rods

Threaded rods can be supplied in specified lengths and thread configurations for custom assemblies.

➤ Ta-20Nb Washers

Washers can be supplied in customized dimensions to complement Ta-20Nb fastening systems.

➤ Customized Ta-20Nb Fasteners

Special bolts, screws, studs and other components can be manufactured or sourced according to engineering drawings.

➤ ASTM B365 Ta-20Nb Fasteners

ASTM B365 is a specification associated with tantalum and tantalum-alloy rod and wire. It should therefore not be presented as a blanket fastener specification for Ta-20Nb components.

Chemical Composition of Tantalum Ta-Nb20 Fasteners

The Ta-20Nb designation represents a nominal tantalum-niobium composition containing approximately 20% niobium and tantalum as the balance.

Chemical Element Nominal Composition
Tantalum (Ta)Balance / approximately 80%
Niobium (Nb)Approximately 20%
Carbon (C)Controlled residual
Oxygen (O)Controlled residual
Nitrogen (N)Controlled residual
Hydrogen (H)Controlled residual
Iron (Fe)Controlled residual
Titanium (Ti)Controlled residual
Tungsten (W)Controlled residual
Molybdenum (Mo)Controlled residual
Silicon (Si)Controlled residual
Nickel (Ni)Controlled residual

The values above describe the nominal alloy composition, not a certified chemistry range. For critical orders, the exact chemical limits should be taken from the agreed material specification and Material Test Certificate.

Mechanical Properties of Ta-20Nb Fasteners

Mechanical Property Ta-20Nb Fasteners
Tensile StrengthCondition dependent
Yield StrengthCondition dependent
ElongationCondition dependent
HardnessCondition dependent
DuctilityCondition dependent
Corrosion ResistanceExcellent in suitable environments
Material ConditionAs specified
TestingAs required by purchase specification

Tantalum Ta-Nb20 Fasteners Weight Chart

Nominal Diameter Approx. Weight / Metre
5 mm0.295 kg
6 mm0.425 kg
8 mm0.754 kg
10 mm1.178 kg
12 mm1.696 kg
14 mm2.309 kg
16 mm3.016 kg
18 mm3.817 kg
20 mm4.712 kg
22 mm5.704 kg
24 mm6.786 kg
25 mm7.363 kg
30 mm10.603 kg
32 mm12.084 kg
36 mm15.314 kg
40 mm18.840 kg

Formula: Approximate weight per metre = π/4 × diameter² × density.

Actual fastener weights should be determined from the finished component dimensions or verified production weight.

Equivalent Grades of Tantalum Ta-Nb20

Grade / Designation Description Equivalent to Ta-20Nb
Ta-20NbApproximately 80% Ta + 20% NbReference composition
Ta20NbAlternate designationSame alloy designation
Tantalum-Niobium 20%Descriptive designationSame composition description
Ta-Nb20Short alloy designationSame composition designation
Ta-Nb3Approximately 3% Nb tantalum alloyNo
Ta-Nb40Approximately 40% Nb tantalum alloyNo
UNS R05240Tantalum-niobium alloy with approximately 40% NbNo
UNS R05200Commercially pure tantalumNo
UNS R05400Commercially pure tantalumNo
UNS R05252Ta-2.5W alloyNo
UNS R05255Ta-10W alloyNo

Why Choose Tantalum Ta-Nb20 Fasteners?

  • Corrosion-Resistant Material: The tantalum-rich alloy composition makes Ta-20Nb suitable for selected highly corrosive service environments.
  • Defined Tantalum-Niobium Composition: The approximately 20% niobium composition provides a specific alloy chemistry for projects requiring Ta-Nb material rather than commercially pure tantalum.
  • Specialty Fastening Applications: Ta-20Nb can be considered for specialized equipment where corrosion resistance and material compatibility are key selection criteria.
  • Custom Dimensions: We can supply components according to customer drawings, dimensions, thread specifications and project requirements.

Applications of Tantalum Ta-Nb20 Fasteners

Chemical Processing Plant Ta-20Nb Fasteners are intended for specialized applications where fastening components need to withstand demanding corrosive service.

Typical application areas include:

  • Chemical processing plants
  • Chemical reactors
  • Process vessels
  • Heat exchangers
  • Corrosive chemical equipment
  • Pharmaceutical processing systems
  • Specialty piping assemblies
  • Laboratory processing equipment
  • Corrosion-resistant equipment
  • High-purity chemical systems
  • Specialized industrial machinery

The suitability of Ta-20Nb must be evaluated against the actual chemical media, concentration, temperature, pressure and operating conditions.

Tantalum Ta-Nb20 Fasteners Manufacturer & Supplier in India

As a Tantalum Ta-Nb20 Fasteners Manufacturer, supplier and stockist, we support requirements for specialty tantalum-niobium fastening components.

Customers looking for a Ta-20Nb Alloy Bolts Supplier in India can provide the required size, quantity, thread specification, drawing and material requirements. We review these details before confirming the available product and supply route.

Our focus is on supplying specialized fasteners according to clearly defined technical requirements rather than treating all tantalum and tantalum-alloy grades as interchangeable.

Tantalum Niobium 20% Fasteners Stockist

We supply Tantalum Niobium 20% Fasteners for industrial and project requirements in standard and customized configurations.

Depending on the product, size and quantity, supply can include bolts, screws, studs, nuts, threaded rods, washers and special components.

Customers can specify:

  • Alloy composition
  • Fastener dimensions
  • Thread type
  • Quantity
  • Drawing requirements
  • Inspection requirements
  • Certification
  • Packaging
  • Delivery destination

Tantalum Ta-Nb20 Fasteners Exporter to USA

We support international requirements for Tantalum Ta-Nb20 Fasteners Exporter to USA applications and can discuss the documentation and packaging requirements associated with export orders.

For USA-bound requirements, customers can provide the applicable engineering specification, drawing, quantity, dimensions and inspection requirements. We can then review the order for material and documentation requirements before dispatch.

Get a Quote for Tantalum Ta-Nb20 Fasteners

Looking for Ta-20Nb Bolts, Screws, Studs, Nuts or Custom Fasteners?

Send us your required dimensions, quantity, thread specification, alloy composition, drawing and applicable standard. We will review your requirement and provide the available supply option.


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