Golden Sunbird Metals is a leading supplier of Tantalum alloys and pure Tantalum (Ta) in China, we offer a comprehensive selection of tantalum-based materials known for their exceptional resistance to corrosion and high-temperature performance. Ideal for electronics, chemical processing equipment, aerospace components, medical devices, nuclear power, automotive, and optical applications, owing to their high melting point, corrosion resistance, and thermal conductivity, our Tantalum alloys promise to elevate your project’s standards. If you want to buy bulk Tantalum alloys or custom Tantalum alloy products, please don’t hesitate to contact [email protected].

FAQS

Tantalum alloys are advanced materials that incorporate tantalum, a rare, hard, blue-gray, lustrous transition metal, with other metals to enhance its natural properties. These alloys are renowned for their extreme resistance to corrosion, high melting points, and ability to conduct electricity and heat, making them invaluable in various high-tech, chemical, and aerospace applications.

  • Most important information:
    1. Tantalum alloys are combinations of tantalum with other metals.
    2. They are known for their corrosion resistance, high melting points, and conductivity.
    3. Used extensively in high-tech, chemical, and aerospace industries.

Tantalum alloys are widely used in electronics due to their excellent electrical conductivity and ability to form thin, highly effective oxide layers that serve as insulating barriers. These characteristics make them ideal for use in capacitors and high-end electronic devices, where stable performance under extreme conditions is essential.

  • Most important information:
    1. Excellent electrical conductivity.
    2. Ability to form effective insulating oxide layers.
    3. Stability under extreme conditions makes them ideal for capacitors and high-end electronics.

Tantalum alloys have a wide range of applications due to their unique properties. They are extensively used in the aerospace industry for manufacturing jet engine components, in the chemical industry for making corrosion-resistant equipment, and in the medical field for producing surgical instruments and implants. Their exceptional durability and resistance to chemical attack make them suitable for these critical applications.

  • Most important information:
    1. Used in aerospace, chemical, and medical industries.
    2. Ideal for manufacturing jet engine components and corrosion-resistant equipment.
    3. Used in producing surgical instruments and implants.

antalum alloys stand out among high-temperature materials due to their exceptional corrosion resistance, especially in acidic environments, and their ability to remain stable at temperatures where many other materials would degrade. While materials like nickel and titanium alloys also offer high-temperature resistance, tantalum alloys often exceed these in terms of chemical stability and resistance to erosion and corrosion. This makes them particularly valuable in chemical processing and environments where reliability under extreme conditions is paramount.

  • Most important information:
    1. Exceptional corrosion resistance in acidic environments.
    2. Stability at high temperatures where other materials degrade.
    3. Superior in chemical stability and resistance to erosion compared to nickel and titanium alloys.

Tantalum (Ta) is a premium refractory metal renowned for its unmatched corrosion resistance, high melting point (~2,996°C / 5,425°F), ductility, and biocompatibility. The primary commercial UNS grades are:

  • R05200: Unalloyed tantalum (pure Ta), produced by electron-beam (EB) furnace or vacuum-arc melting (VAM/VAR), or both.
  • R05400: Unalloyed tantalum (pure Ta), produced by powder-metallurgy consolidation (sintered process).
  • R05255: Tantalum alloy, 90% Ta + 10% W (Ta-10W), EB furnace or VAM, or both.
  • R05252: Tantalum alloy, 97.5% Ta + 2.5% W (Ta-2.5W), EB furnace or VAM, or both.
  • R05240: Tantalum alloy, 60% Ta + 40% Nb (Ta-40Nb), EB furnace or VAM, or both.

These grades are supplied in fully annealed condition for maximum ductility and performance.

Typical compositions (weight %, per ASTM):

Grade Ta (Balance) W Nb Key Interstitial Limits
R05200 ≥99.85% – – C≤0.010–0.020%, O≤0.015%, N≤0.010%, H≤0.0015%
R05400 ≥99.85% – – C≤0.020%, O≤0.035%, N≤0.010%, H≤0.0015% (higher O/H tolerance)
R05255 (Ta-10W) ~90% 9.0–11.0% – C≤0.010%, O≤0.015%, N≤0.010%, H≤0.0015%
R05252 (Ta-2.5W) ~97.5% 2.0–3.0% – Same low interstitials as above
R05240 (Ta-40Nb) ~60% – 35–45% Same low interstitials as above

R05200 vs. R05400: Nearly identical chemically, but R05400 permits slightly higher oxygen due to the powder-metallurgy route.

  • Melting point: ~2,996°C (5,425°F) across all grades.
  • Density: 16.6 g/cm³ (pure Ta); ~16.8 g/cm³ for Ta-10W.
  • Corrosion resistance: Exceptional — resists virtually all acids (HCl, H₂SO₄, HNO₃), salts, and hot/cold aqueous solutions except HF and certain strong alkalis with oxidizers. Remains the industry benchmark for chemical equipment.
  • Mechanical (annealed, room temperature, typical sheet):
    • Pure grades (R05200/R05400): UTS 207–345 MPa, YS 140–207 MPa, elongation 25–40%.
    • R05255 (Ta-10W): UTS min. 482 MPa, YS min. 379–414 MPa, elongation 15–20%.
    • R05252 & R05240: Intermediate strength between pure and Ta-10W.
  • High-temperature performance: Excellent strength retention >1,000°C; Ta-W grades offer superior creep resistance.
  • Other benefits: High ductility at cryogenic and elevated temperatures, excellent thermal conductivity, low vapor pressure, biocompatible, and weldable without loss of corrosion resistance.

R05400 provides a finer, more uniform grain structure than melted R05200, beneficial for surface-critical uses.

  • R05200 & R05400 (unalloyed): Chemical processing (heat exchangers, reactors, piping, valves), medical/surgical implants, capacitor anodes (powder), vacuum furnaces, nuclear reactors, electronics.
  • R05255 (Ta-10W): Aerospace rocket nozzles/thrust chambers, high-pressure/high-temperature chemical equipment, nuclear components, high-temp furnace elements.
  • R05252 (Ta-2.5W): Corrosion-resistant linings, heat exchangers, and moderate high-temp parts in chemical and energy sectors.
  • R05240 (Ta-40Nb): Fabricated components needing excellent corrosion resistance + improved formability; chemical processing, aerospace structures, cost-effective high-temp hardware.

These grades excel where stainless steels, titanium, or nickel alloys cannot survive aggressive acids or extreme heat.

  • Pure Ta (R05200/R05400): Ultimate corrosion resistance + ductility; R05200 for general melted ingot use, R05400 for finer grain and capacitor-grade purity.
  • Ta-W alloys (R05255 & R05252): Dramatically higher strength and creep resistance at high temperatures with almost no sacrifice in corrosion resistance. Ta-10W for the most extreme duty; Ta-2.5W for balanced performance.
  • Ta-40Nb (R05240): Lower density/cost than pure Ta in many cases, superior fabricability (forming/welding), and excellent corrosion resistance in targeted media.

All grades deliver proven longevity in the harshest environments.