
Tantalum, with the chemical symbol Ta, is a lustrous steel-gray metal. It belongs to the VB family in the periodic table, has an atomic number of 73, and an atomic weight of 180.9479. Boasting a body-centered cubic crystal structure, this metal commonly exhibits a valence of +5. Tantalum's hardness is inherently low and varies with oxygen content; ordinary pure tantalum, when annealed, has a Vickers hardness of merely 140 HV. Its melting point soars to a remarkable 2995°C, placing it fifth among elements, just after carbon, tungsten, rhenium, and osmium. Highly malleable, tantalum can be drawn into thin wires. It features a minimal coefficient of thermal expansion, expanding by just 6.6 ppm per degree Celsius. Moreover, its exceptional toughness surpasses even that of copper.
Primarily sourced from tantalite, tantalum coexists with niobium. Defined by moderate hardness and excellent ductility, it can be shaped into thin foils and fine wires. Tantalum's small coefficient of thermal expansion and superior chemical properties, including high resistance to corrosion, make it invaluable. It finds applications in making evaporators, electrodes for electron tubes, rectifiers, and electrolytic capacitors. In the medical field, it's utilized for suturing tissues, thanks to its corrosion resistance, which stems from a stable tantalum pentoxide (TaO) protective film on its surface.
Owing to its unique attributes, tantalum is essential across a diverse array of applications.
Tantalum serves as an excellent alternative to stainless steel in manufacturing various inorganic acids.
Additionally, in the realms of chemical, electronic, electrical, and other industries,
tantalum has the potential to replace platinum, traditionally used in these sectors,
Tantalum's application in capacitors is critical, particularly for military equipment.
Remarkably, half of the global tantalum supply is dedicated to producing tantalum capacitors.
Certificate of Analysis (COA) available upon request.
Changsha Xinkang Advanced Materials Co., Ltd (XK) stands as a global leader in the R&D, manufacturing, and distribution of advanced high-tech materials. Our offerings include high-purity metals, customized alloys, complex compounds, and sophisticated synthetic materials tailored for research institutes and high-tech industries worldwide. Our expertise spans high-purity metals, rare-earth metals, powder materials, coated substrates, and more.
Our products meet a range of stringent standards including ASTM/B, ASME SB, AMS, DIN, and JIS. These products are
widely utilized in diverse sectors such as petrochemical, aerospace, aviation, shipbuilding, energy, medical,
military, electronics, environmental protection, mechanical engineering, instrumentation, metallurgy, automotive,
and many other fields.
Based in Changsha, Hunan, our 4000-square-meter facility
is accredited with the ISO 9001:2015 quality management system and the ISO 14001:2015 environmental
management system. Equipped with state-of-the-art technology and a highly skilled technical team,
we rigorously test our products using carbon-sulfur analyzers, spectrometers, flaw detectors, cupping machines, stiffness testers, and other advanced instruments. Our professional technicians and
skilled workforce are committed to delivering products and services of the highest quality. Our products are
exported globally to the USA, Europe, the Middle East, Japan, Korea, Singapore, India, and Kenya.
Our reputation for high quality, competitive pricing, punctual delivery, and exceptional after-sales service
has earned us the unwavering trust and appreciation of our customers.
No matter the volume or size of your order, we strive to meet your requirements with utmost dedication—experience backed by years of excellence.



Standard Export Packaging: Securely vacuum-sealed inside; robust export carton or wooden case outside to ensure utmost protection.
Shipping Options: We facilitate shipment through renowned couriers like FedEx, DHL, UPS, TNT Express, ensuring timely and reliable delivery.
For shipments with a gross weight of ≤100KG, we use express services. For larger consignments ≥100KG, we will discuss the best shipping method with you.

1. Are you a trading company or a manufacturer?
Xinkang: We are a seasoned manufacturer with over a decade of specialization in this field.
2. How long is your delivery time?
Xinkang: For standard sizes or samples, shipment can be arranged within 3-5 days. For bulk orders, delivery is within 15 days.
3. Do you have a Minimum Order Quantity (MOQ)?
Xinkang: No minimum order quantity; we support sample orders.
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