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Tantalum Powder

TFM takes the lead as a trusted provider of premium tantalum powders specifically designed for metallurgical applications. These powders are characterized by their finely adjusted grain sizes and exceptional purity levels. Known for their technical efficiency and cost-effectiveness, TFM’s tantalum powders consistently exceed customer expectations. Most importantly, TFM guarantees a reliable supply of top-tier tantalum products, ensuring consistent and uncompromised quality.

Tantalum Powder

Tantalum is a highly dense metal, about twice as dense as steel, and it remains highly ductile at elevated temperatures. With the fourth highest melting point among all metals, it is highly resistant to heat and forms ultra-thin, protective oxide layers, making it ideal for high-quality capacitors. Our tantalum powder features a high surface area, excellent handling, and reliable flow properties, making it suitable for various industrial applications. It can be categorized into three main types based on its usage: capacitor-grade tantalum for electronics, metallurgical tantalum for alloys, and voltage tantalum powder for specific voltage-based applications.

High-capacitance Tantalum Powder

Features of Our Tantalum Powder

Our tantalum powder is produced using the sodium reduction method, ensuring high purity and quality. It is ideal for manufacturing capacitors with a rated withstand voltage ranging from 4V to 40V. This powder is especially well-suited for making chips, impregnated tantalum electrolytic capacitors, and organic polymer capacitors. It offers excellent moldability, high specific capacitance, minimal leakage current, and low equivalent series resistance, making it a top choice for advanced capacitor technologies.

Electrical Properties

GradeCapacitance(+10%-6%)
(μFV/g)		Volume shrinkage
(%)		Current leakage
(nA/μFV)		Dissipation factor
(%)		Breakdown voltage
(V)
FTa16-70070000≤15≤0.5≤40≥120
FTa16-50050000≤18≤0.4≤25≥120
FTa16-40040000≤18≤0.4≤20≥120
FTa16-30030000≤18≤0.4≤20≥120
FTa16-23023000≤18≤0.4≤15≥140

Chemical Analysis of Tantalum Powder(Maximum Values/wt ppm)

GradeOCNHFeNiCrSiTiNbNa+KWMo
FTa16-70040004010001803030202053040105
FTa16-5003500405001703030202053030105
FTa16-4003000405001703030202053030105
FTa16-3002500304001203030202053030105
FTa16-2302500301501203030202053020105

Physical Properties

GradeBulk density(g/cm3）Average fisher size（um）Particle-size distribution
（-325mesh%）
FTa16-7001.5-2.11.8-3.0≤35
FTa16-5001.6-2.22.0-3.4≤35
FTa16-4001.6-2.22.0-3.5≤35
FTa16-3001.7-2.32.4-3.5≤35
FTa16-2301.7-2.32.4-3.5≤35

 

Middle-Voltage Tantalum Powder

Features:

Our tantalum powder is characterized by its simple flake shape, which contributes to its efficient processing. It has a larger Fischer particle size combined with a smaller specific surface area, enhancing its sintering resistance and reliability. This powder is particularly suitable for manufacturing medium to high voltage solid tantalum electrolytic capacitors with high reliability requirements, ranging from 20V to 63V. It excels in high voltage resistance, making it a dependable choice for advanced capacitor applications.

Electrical Properties

GradeCapacitance(+10%-6%)
(u FV/g)		Current leakage
(nA/u FV)		Dissipation factor
(%)		Breakdown voltage
(V)
FDP-10010000≤0.4≤10≥180
FDP -808000≤0.4≤10≥230
FDB -525200≤0.5≤8≥240
FTa40-424200≤0.5≤8≥240

 

Chemical Analysis (Maximum Values/wt ppm)

GradeOCNFeNiCrSiTiNbNaKWMoAlMn
FDP-100220060100501015205301515201055
FDP-80210060100501015205301010201055
FDB-5217004550351015205301010201055
FTa40-4217004550351015205301010201055

 

Physical Properties

GradeBulk density (g/cm3）Average fisher size (um)Particle-size distribution
(-325mesh%)
FDP-1001.5-2.33.0-5.0≤30
FDP-801.7-2.53.0-5.0≤30
FDB-523.0-4.04.5-8.0≤30
FTa40-423.5-4.55.0-9.0≤30

 

High-Voltage Tantalum Powder

Features:

• Simple structure.

• Smaller specific surface area

• Good voltage resistance, and high breakdown voltage

•  It’s suitable for making medium to high voltage solid tantalum electrolytic capacitors with specifications greater than 63V

Electrical Properties

 GradeCapacitance
(+10%-6%)(uFV/g)		Current leakage
(nA/u FV)		Dissipation factor
(%)		Breakdown voltage
(V)
FTa50-505000≤0.6≤6≥260
FTa50-404000≤0.6≤6≥260
FDC-505000≤0.7≤6≥300
FTa63-404000≤0.7≤6≥300
FTa63-353500≤0.7≤6≥300
FTa63-282800≤0.7≤5≥300
FTa63-252500≤0.7≤4≥300
FTa63-202000≤0.7≤3≥300
FTa63-151500≤0.7≤3≥300
FTa63-101000≤0.7≤3≥300

Chemical Analysis (Maximum Values/wt ppm)

GradeONCFeNiCrSiTiNbWMoALMn
FTa50-5018006050401515201030101055
FTa50-4016006050401515201030101055
FDC-5020006060501515201030101055
FTa63-4018006040351515201030101055
FTa63-3516006040301515201030101055
FTa63-2814004030201010201030101055
FTa63-2514004030201010201030101055
FTa63-201200402515101020530101055
FTa63-151000402515101020530101055
FTa63-101000402515101020530101055

 

Physical Properties

GradeBulk density(g/cm3）Average fisher size（μm）
FTa50-502.5-3.55.5-7.5
FTa50-403.0-4.07.5-11.0
FDC-502.5-3.54.0-7.0
FTa63-403.5-4.58.0-11.0
FTa63-353.5-4.58.0-12.0
FTa63-283.5-5.58.0-12.0
FTa63-254.0-6.09.0-14.0
FTa63-204.0-6.08.0-13.0
FTa63-155.0-6.59.0-15.0
FTa63-105.5-6.510.0-20.0

 

 

Tantalum powder for metallurgical purposes

Features:

• Appearance: Dark grey powder or black powder.

• Application: Used for making various tantalum processing materials and alloy additives

Grade:FTa-01,  FTa-02,  FTa-1

GradeFTa-01FTa-02FTa-1
Main contentTa,%,Minimum99.9599.9599.95
Impurity content ,
%,max		O0.1000.1200.180
C0.0050.0050.008
N0.0050.0050.008
H0.0030.0030.003
Fe0.0040.0040.005
Ni0.0030.0030.005
Cr0.0030.0030.005
Nb0.0030.0030.005
W0.0020.0020.002
Mo0.0010.0010.002
Si0.0030.0030.005
Mn0.0010.0010.001
Ti0.0010.0010.001
Fsss(um)3.0-10.03.0-10.03.0-10.0
Sieve mesh-80-80-80
ApplicationTantalum processing and alloying additives
Special requirements to be agreed upon by the supplier and buyer

Spherical Tantalum Powder

TFM’s spherical tantalum powder is an excellent choice for 3D printing technology due to its high purity and uniform particle size. Its well-defined surface structure and ease of dispersion are complemented by a large specific surface area and high surface activity. This powder’s superior sphericity and controlled grain size make it particularly well-suited for surface coating applications. Additionally, its biocompatibility and other beneficial properties make it a preferred material for a variety of advanced applications.

Physical Properties

Size15-53 um
Apparet density9.75 g/cm3
Tap density10.8 g/cm3
Hall flow rate5.8 s/50g

Chemical Composition

Chemical Composition – by ICP-AES
ElementTaFeMgCuAlCaSnMn
Value (%)≥99.90.002＜0.001＜0.001＜0.001＜0.001＜0.001＜0.001
ElementTiMoWNbSiCrNi
Value (%)＜0.001＜0.001＜0.001＜0.001＜0.001＜0.001＜0.001
Gas Impurities
ElementCHON
Value (%)0.0020.00180.0450.004

Tantalum Powder Features

– Biocompatible properties;
– High resistance to corrosion;
– Resistant to high temperature.

Tantalum Powder Application

– Metal injection molding (MIM);
– Additive manufacturing (AM);
– Thermal spray (TSA);

Packing of Tantalum Powder:

In iron drums with inside plastic bags of 100kg or 200kg net each.

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FAQ

  • Metal powders are fine particles of metals produced through various processes such as atomization, reduction, or electrolysis. They are used in applications like additive manufacturing, powder metallurgy, and coatings.

  • Alloy powders consist of two or more metallic elements combined to enhance properties like strength, corrosion resistance, and ductility, whereas pure metal powders contain only a single element.

  • The shape affects flowability, packing density, and spreadability. Spherical particles are preferred in additive manufacturing due to their superior flow characteristics.

  • Spherical powders are typically produced using gas atomization, where molten metal is atomized into fine droplets that solidify into spherical shapes.

  • Spherical powders offer better flowability and packing density, leading to improved layer uniformity and mechanical properties in 3D-printed components.

  • Factors include particle size distribution, shape, chemical composition, purity, and production method.

  • Yes, metal powders can pose hazards such as toxicity, reactivity, combustibility, and instability. Proper handling, storage, and safety protocols are essential.

  • In powder metallurgy, metal powders are compacted and sintered to produce components with complex shapes and tailored properties, often with minimal waste.

  • Yes, unused or excess metal powders from manufacturing processes can often be collected, sieved, and reused, provided they meet quality standards.

  • The combination of different metals in alloy powders can enhance properties such as strength, hardness, corrosion resistance, and thermal stability, depending on the application requirements.

  • Spherical alloy powders are used in aerospace, automotive, medical implants, and tooling industries for manufacturing high-performance components via additive manufacturing and powder metallurgy.

Production methods like gas atomization, water atomization, and mechanical milling influence particle size, shape, and purity, which in turn affect the performance of the powders in various applications.

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