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Send EmailTantalum Powder, Tantalum Metal Powder, 7440-25-7
| Parameter | Information |
|---|---|
| Product Name | Tantalum Powder / Tantalum Metal Powder |
| Other Technical Names | Tantalum Powder, Capacitor Grade Tantalum Powder, Metallurgical Grade Tantalum Powder, High Purity Tantalum Powder |
| CAS Number | 7440-25-7 |
| Chemical Symbol | Ta |
| Atomic Number | 73 |
| Atomic Weight | 180.95 g/mol |
| Product Family | Refractory Metal (Noble Metal) |
| Appearance | Grey metallic powder |
Tantalum Powder (Ta)
Body-Centered Cubic (BCC) Crystal Structure
Ta Ta Ta Ta
\ | / |
Ta Ta Ta Ta
/ | \ |
Ta Ta Ta Ta
Body-Centered Cubic (BCC) Crystal Structure
Refractory Metal
Very High Melting Point (3017°C)
High Corrosion Resistance
Used in Capacitor and Medical Applications
Molecular Formula: Ta (Elemental)
Crystal Structure: Body-Centered Cubic (BCC)
Electron Configuration: [Xe] 4f¹⁴ 5d³ 6s²
Oxidation States: +5 (primarily)
Melting Point: 3017°C
Boiling Point: 5458°C
Density: 16.5-16.65 g/cm³
| Parameter | Information |
|---|---|
| Product Name | Tantalum Powder / Tantalum Metal Powder |
| Other Technical Names (English) | Tantalum Powder, Tantalum Metal Powder, Capacitor Grade Tantalum Powder, Metallurgical Grade Tantalum Powder, High Purity Tantalum Powder |
| Other Technical Names (Turkish) | Tantal Tozu, Tantal Metal Tozu, Kondansatör Sınıfı Tantal Tozu, Metalurji Sınıfı Tantal Tozu, Yüksek Saflıkta Tantal Tozu |
| Other Technical Names (German) | Tantalpulver, Tantalmetallpulver |
| Other Technical Names (French) | Poudre de Tantale, Poudre de Tantale Métallique |
| Other Technical Names (Spanish) | Polvo de Tántalo, Polvo de Tántalo Metálico |
| CAS Number | 7440-25-7 |
| Chemical Symbol | Ta |
| Atomic Number | 73 |
| Atomic Weight | 180.95 g/mol |
| Chemical Class | Refractory Metal (Noble Metal) |
| Crystal Structure | Body-Centered Cubic (BCC) |
| Electron Configuration | [Xe] 4f¹⁴ 5d³ 6s² |
| Oxidation States | +5 (primarily) |
| Appearance | Grey metallic powder |
| Odor | Odorless |
| Color | Grey |
| Magnetic Properties | Non-magnetic (paramagnetic) |
| Property | Value | Test Method / Note |
|---|---|---|
| Appearance | Grey metallic powder | Visual |
| Atomic Weight | 180.95 g/mol | Calculated |
| Density | 16.5-16.65 g/cm³ | ASTM D792 |
| Melting Point | 3017°C | Highest after Tungsten and Rhenium |
| Boiling Point | 5458°C | - |
| Hardness (HV10) | 80-110 | Depends on diameter and processing |
| Tensile Strength | 110-250 MPa | Annealed or unannealed condition |
| Elongation (Fracture) | 20% (annealed); 5% (unannealed) | ASTM E8 |
| Electrical Conductivity | 7.9 × 10⁶ S/m (at 300 K) | ASTM E1004 |
| Thermal Conductivity | 57.5 W/m·K | - |
| Specific Heat (25°C) | 0.14 J/g·K | - |
| Electrical Resistivity | 12.4 × 10⁻⁸ Ω·m | - |
| Thermal Expansion Coefficient | 6.3 × 10⁻⁶ /°C | - |
| Corrosion Resistance | Exceptional | Resistant to acids and liquid metals |
| Magnetic Properties | Non-magnetic | - |
| Biocompatibility | High | Compatible with the body |
| Dielectric Property | High dielectric constant | Surface oxide film |
| Parameter | Information |
|---|---|
| Chemical Character | Refractory metal; noble metal; exceptional corrosion resistance; high melting point; biocompatible |
| Stability | Stable under normal conditions; Forms passive oxide layer (Ta₂O₅) on surface; Corrosion resistant |
| Reactivity | Exceptionally resistant to acids; Soluble in hydrofluoric acid (HF) and hot sulfuric acid; Reacts with halogens at high temperatures |
| Incompatible Materials | Hydrofluoric acid, hot sulfuric acid, halogens, molten alkalis |
| Corrosion Resistance | Exceptional; Forms passive oxide layer (Ta₂O₅); Resistant to most acids and liquid metals |
| Acid Reaction | Ta + HF → TaF₅ + H₂ (in hydrofluoric acid) |
| Oxidation | 4Ta + 5O₂ → 2Ta₂O₅ (protective oxide layer) |
| Special Property | Surface oxide film has high dielectric constant; Plays critical role in capacitors; Biocompatible |
| Grade | Purity (%) | Particle Size | Application Areas |
|---|---|---|---|
| Capacitor Grade | ≥ 99.9% | < 150 µm | Electronic capacitors |
| Metallurgical Grade | ≥ 99.9% | < 250 µm | Superalloys, high-temperature parts |
| High Purity | ≥ 99.99% | < 75 µm | Medical implants, precision applications |
| Spherical Powder (3D Printing) | ≥ 99.95% | 15-45 µm | 3D printing, advanced manufacturing |
| Industry | Suitability Level | Key Features |
|---|---|---|
| Electronics | ⭐⭐⭐⭐⭐ | High dielectric constant, capacitor production |
| Metallurgy | ⭐⭐⭐⭐ | Superalloy additive, high-temperature resistance |
| Chemical Industry | ⭐⭐⭐⭐ | Acid and corrosion resistance |
| Medical | ⭐⭐⭐⭐ | Biocompatibility, implants and surgical instruments |
| Aerospace & Space | ⭐⭐⭐⭐ | High melting point, superalloys |
| 3D Printing | ⭐⭐⭐ | Spherical powder form, advanced manufacturing |
| Property | Explanation |
|---|---|
| High Melting Point | With a melting point of 3017°C, it is one of the metals with the highest melting point after tungsten and rhenium. Ideal for high-temperature applications. |
| Corrosion Resistance | Exceptionally resistant to acids and liquid metals. Forms passive oxide layer (Ta₂O₅) on surface. |
| Processability | High cold forming capability, good weldability and forgeability. |
| Biocompatibility | Preferred in medical implants because it is compatible with the body. Not rejected by the body. |
| Dielectric Property | Surface oxide film has high dielectric constant. This property plays a critical role in capacitors. |
| Electrical Conductivity | High electrical conductivity (7.9 × 10⁶ S/m) suitable for electronic applications. |
| Application Area | Explanation |
|---|---|
| Capacitors | Production of high-capacitance tantalum capacitors |
| Microchips | Provides stability in power management circuits |
| Automotive Electronics | Durable and long-life capacitors |
| Application Area | Explanation |
|---|---|
| Superalloys | High-temperature resistance in jet engine and turbine parts |
| Hard Metal Additive | Increases mechanical strength |
| High-Temperature Parts | Furnace components, heat shields |
| Application Area | Explanation |
|---|---|
| Reactors | Acid-resistant surface coatings |
| Heat Exchangers | Corrosion-resistant metal parts |
| Laboratory Equipment | Long-life use in aggressive environments |
| Application Area | Explanation |
|---|---|
| Implants | Biocompatible, not rejected by the body |
| Surgical Instruments | Durable and sterilizable |
| Dental Applications | Dental implants and fixation parts |
| Application Area | Explanation |
|---|---|
| Jet Engines | High-temperature resistance in superalloys |
| Space Vehicles | Lightweight and durable parts |
| Turbine Blades | Long life due to high melting point |
| Application Area | Explanation |
|---|---|
| Spherical Powder Use | Provides smooth flow in additive manufacturing |
| Prototype Production | High-strength metal parts |
| Advanced Manufacturing | Special alloys and medical implant production |
| Parameter | Explanation |
|---|---|
| Operating Principle | Tantalum powder is pressed and sintered; Ta₂O₅ dielectric layer is formed on the surface; High capacitance is achieved |
| Dielectric Constant | Ta₂O₅ film has high dielectric constant (~27) |
| Advantages | High capacitance; Small size; Long life; Stable performance; Wide temperature range |
| Application Areas | Phones; Computers; Automotive electronics; Medical devices; Defense systems |
| Parameter | Capacitor Grade | Metallurgical Grade | High Purity | Test Method |
|---|---|---|---|---|
| Appearance | Grey metallic powder | Grey metallic powder | Grey metallic powder | Visual |
| Purity (Ta) | ≥ 99.9% | ≥ 99.9% | ≥ 99.99% | AAS / ICP / GDMS |
| Oxygen (O) | ≤ 0.1% | ≤ 0.1% | ≤ 0.05% | LECO / Inert Gas Fusion |
| Nitrogen (N) | ≤ 0.02% | ≤ 0.02% | ≤ 0.01% | LECO / Inert Gas Fusion |
| Carbon (C) | ≤ 0.01% | ≤ 0.01% | ≤ 0.005% | Combustion / ICP |
| Iron (Fe) | ≤ 0.01% | ≤ 0.01% | ≤ 0.005% | AAS / ICP / GDMS |
| Niobium (Nb) | ≤ 0.01% | ≤ 0.01% | ≤ 0.005% | AAS / ICP / GDMS |
| Molybdenum (Mo) | ≤ 0.01% | ≤ 0.01% | ≤ 0.005% | AAS / ICP / GDMS |
| Tungsten (W) | ≤ 0.01% | ≤ 0.01% | ≤ 0.005% | AAS / ICP / GDMS |
| Particle Size | < 150 µm | < 250 µm | < 75 µm | Sieve analysis |
| Form | Metallic powder | Metallic powder | Metallic powder | Visual |
| Parameter | Value |
|---|---|
| Acute Oral Toxicity | Low toxicity (metallic form) |
| Acute Inhalation Toxicity | Dust inhalation may cause irritation |
| Skin Irritation | Metallic form is not irritating |
| Eye Irritation | Metallic form is not irritating |
| Chronic Toxicity | Tantalum compounds show low toxicity |
| Carcinogenicity | Not classified as carcinogenic |
| Mutagenicity | Not classified as mutagenic |
| Target Organs | Respiratory system (dust irritation) |
| Occupational Exposure Limit (8h TWA) | 5 mg/m³ (Ta dust) |
| Special Toxicity Note | Metallic tantalum is non-toxic; Fine dust may cause respiratory irritation; Appropriate dust control measures should be used; Tantalum compounds generally have low toxicity |
GHS Classification (in compliance with CLP and UN GHS):
| Hazard Class | Category | H-Statement |
|---|---|---|
| Flammable Powders | Category 1 | H228 (optional) |
| STOT - SE (Single Exposure) | Category 3 | H335 (optional) |
Note: Not classified as hazardous in solid state. However, fine powder may be flammable and dust inhalation may cause irritation.
Signal Word: WARNING (optional)
Hazard Pictograms: GHS02 (Flammable - for powder), GHS07 (optional)
Hazard Statements (H-Codes) - if classified:
| Code | Statement |
|---|---|
| H228 | Flammable solid |
| H335 | May cause respiratory irritation |
| Code | Statement |
|---|---|
| P210 | Keep away from heat/sparks/open flames/hot surfaces |
| P261 | Avoid breathing dust/fume/gas/mist/vapors/spray |
| P264 | Wash hands thoroughly after handling |
| P271 | Use only outdoors or in a well-ventilated area |
| P280 | Wear protective gloves/protective clothing/eye protection/face protection |
| P304+P340 | IF INHALED: Remove person to fresh air and keep comfortable for breathing |
| P312 | Call a POISON CENTER/doctor if you feel unwell |
| P362+P364 | Take off contaminated clothing and wash it before reuse |
| P403+P233 | Store in a well-ventilated place. Keep container tightly closed |
| P501 | Dispose of contents/container in accordance with local/regional/national/international regulations |
| Exposure Route | Action to Take |
|---|---|
| Inhalation | Move to fresh air immediately. Keep at rest in a position comfortable for breathing. If symptoms persist, get medical attention. |
| Skin Contact | Wash with plenty of soap and water. Remove contaminated clothing. If skin irritation occurs, get medical advice/attention. |
| Eye Contact | Rinse immediately with plenty of water for at least 15 minutes. Keep eyelids open. Remove contact lenses. Continue rinsing. If eye irritation persists, get medical advice/attention. |
| Ingestion | Rinse mouth with water. Do NOT induce vomiting. Drink plenty of water. If symptoms develop, get medical attention. |
| Parameter | Information |
|---|---|
| Fire Hazard | Not flammable (ingot). Flammable in powder form. Fine dust may form explosive mixtures with air under certain conditions. |
| Hazards During Fire | May release tantalum oxide fumes at high temperatures |
| Suitable Extinguishing Media | Dry chemical powder, CO₂, sand, Class D extinguishers |
| Unsuitable Extinguishing Media | Water (for powder) |
| Special Protective Equipment | Self-contained breathing apparatus (SCBA), full protective clothing |
| Special Precautions | Prevent dust from entering sewers and waterways; Do not inhale fumes |
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area; Away from acids and oxidizing agents; Keep in original packaging |
| Container Requirements | Keep in original packaging, dry containers; Protect from corrosion; Airtight containers |
| Materials to Protect From | Strong acids, oxidizing agents, halogens, moisture |
| Shelf Life | Unlimited (under proper storage conditions) |
| Stability Note | Stable under normal conditions; May form oxide layer on surface; Protect from moisture |
| Packaging Type | Quantity | Material |
|---|---|---|
| Plastic Drum | 25-50 kg | HDPE (airtight) |
| Plastic Bucket | 5-25 kg | HDPE (airtight) |
| Glass Bottle | 100 g - 2 kg | Glass (airtight) |
| Plastic Bag | 1-10 kg | PE (sealed) |
| Steel Drum | 100-500 kg | Corrosion-resistant lined steel |
| Parameter | Information |
|---|---|
| UN Number | 3089 (Metal powder, flammable, n.o.s.) |
| Hazard Class | 4.1 (Flammable solids) |
| Packing Group | II or III |
| ADR/RID | 4.1, PG II/III |
| IMDG Code | 4.1, PG II/III |
| IATA (Air) | 4.1, PG II/III |
| Marine Pollutant | No |
| Transport Temperature | Ambient temperature; Protect from moisture |
| Type | Name |
|---|---|
| Turkish Names | Tantal Tozu, Tantal Metal Tozu, Kondansatör Sınıfı Tantal Tozu, Metalurji Sınıfı Tantal Tozu, Yüksek Saflıkta Tantal Tozu |
| English Names | Tantalum Powder, Tantalum Metal Powder, Capacitor Grade Tantalum Powder, Metallurgical Grade Tantalum Powder, High Purity Tantalum Powder |
| German Names | Tantalpulver, Tantalmetallpulver |
| French Names | Poudre de Tantale, Poudre de Tantale Métallique |
| Spanish Names | Polvo de Tántalo, Polvo de Tántalo Metálico |
| Chemical Names | Tantalum (elemental form); Tantalum metal |
| CAS Number | 7440-25-7 |
| Atomic Symbol | Ta |
| Atomic Number | 73 |
| Parameter | Value |
|---|---|
| Product | Tantalum Powder / Tantalum Metal Powder |
| CAS Number | 7440-25-7 |
| Atomic Number | 73 |
| Atomic Weight | 180.95 g/mol |
| Appearance | Grey metallic powder |
| Density | 16.5-16.65 g/cm³ |
| Melting Point | 3017°C |
| Boiling Point | 5458°C |
| Hardness (HV10) | 80-110 |
| Electrical Conductivity | 7.9 × 10⁶ S/m |
| Magnetic Properties | Non-magnetic |
| Primary Function | Refractory metal; Capacitor material; Alloy additive |
| Main Applications | Electronics, metallurgy, chemical, medical, aerospace, 3D printing |
| Shelf Life | Unlimited |
| GHS Signal Word | WARNING (optional) |
| UN Number | 3089 |
| Hazard Class | 4.1 (Flammable solids) |
| Special Features | Very high melting point; Exceptional corrosion resistance; Biocompatible; High dielectric constant |
Rare and expensive: Limited worldwide production. Use sparingly and pay attention to recycling.
Powder form: Fine particles should not be inhaled; appropriate protective equipment should be used.
Flammable in powder form. Fine dust may form explosive mixtures with air under certain conditions.
Ethical sourcing: Tantalum mining is known as a "conflict mineral" in some regions. It is important to source from certified suppliers.
Exceptionally resistant to acids but soluble in hydrofluoric acid (HF) and hot sulfuric acid.
High melting point (3017°C) requires special equipment during processing.
Biocompatible but powder form may be irritating.
Incompatibilities: Hydrofluoric acid, hot sulfuric acid, halogens, molten alkalis.
Hygiene Requirement: Wash hands thoroughly after use.
10. Capacitor Production:
Use capacitor grade tantalum powder for high-capacitance tantalum capacitors. Ensure high purity and appropriate particle size.
11. Superalloy Production:
Use metallurgical grade tantalum powder for high-temperature resistance in jet engine and turbine parts.
12. Chemical Equipment:
Use tantalum coating or tantalum parts for acid-resistant reactors and heat exchangers.
13. Medical Implants:
Use high-purity tantalum powder for biocompatible implants and surgical instruments.
14. 3D Printing:
Use spherical tantalum powder for additive manufacturing. Ensure smooth flow and high density.
15. Use:
Use in well-ventilated areas; Avoid dust formation; Wear protective gloves, safety goggles and appropriate respiratory protection.
16. Personal Protective Equipment:
Use safety goggles, protective clothing, protective gloves (nitrile, neoprene), NIOSH approved dust mask (if dust is present).
17. Hygiene:
Do not eat, drink or smoke while using; Wash hands thoroughly after use; Do not take contaminated work clothes home.
18. Storage:
Store in cool, dry, well-ventilated area; Keep away from acids and oxidizing agents; Store in closed, airtight containers.
19. Spill Response:
Avoid dust formation; Vacuum or sweep; Place in closed containers; Do not allow to enter drains or waterways.
20. Disposal:
Dispose in accordance with local, regional and national regulations; Tantalum is rare and valuable, so recycling is preferred.
| Application | Recommended Grade | Explanation |
|---|---|---|
| Capacitor production | Capacitor Grade (≥99.9%) | High purity, appropriate particle size |
| Superalloys | Metallurgical Grade (≥99.9%) | High purity, appropriate particle size |
| Medical implants | High Purity (≥99.99%) | Highest purity, biocompatibility |
| 3D printing | Spherical Powder (≥99.95%) | Spherical morphology, smooth flow |
| Research | High Purity (≥99.99%) | Highest purity |
| Parameter | Requirement |
|---|---|
| Storage Temperature | Room temperature (15-25°C) |
| Humidity | <60% relative humidity |
| Container | Airtight containers |
| Location | Cool, dry, well-ventilated area; Away from acids and oxidizing agents |
Tantalum mining is known as a "conflict mineral" in some regions. Therefore, when sourcing tantalum powder, ensure that it is obtained from certified and ethical sources (e.g., ITRI Tantalum Certificate or Conflict-Free Smelter Program).
Tantalum is a rare element and recycling is environmentally important. Used tantalum products should be recycled and waste management should be carefully considered.
The information provided in this document is based on our current knowledge and experience and is provided in good faith; however, since all conditions of use are beyond our control, it does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing suitability for their own applications. For complete safety, storage, use, handling, disposal and regulatory compliance information, reference should be made to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.