Tantalum Sheet & Tantalum Plate Description
Tantalum Sheets and Tantalum Plates are crafted from high-purity tantalum, a dense, ductile, and highly corrosion-resistant metal with a distinctive dark blue-gray appearance. Known for its exceptional resistance to chemicals at temperatures below 150°C, tantalum can only be dissolved by hydrofluoric acid. With a high melting point and the ability to form an ultra-thin, protective oxide layer, tantalum is an ideal material for high-performance capacitors and advanced industrial applications.
With over 20 years of expertise in tantalum manufacturing and sales, Stanford Advanced Materials (SAM) is a globally trusted supplier of high-quality Tantalum Sheets and Tantalum Plates. We offer reliable and competitively priced tantalum products tailored for various industries. Additionally, our product range includes Tantalum Tungsten (Ta2.5W) and Tantalum Tungsten (Ta10W) Alloy Products to meet specialized application demands.
Tantalum Sheet & Tantalum Plate Specification
Properties
Density
|
≥16.69 g/cm3
|
Hardness
|
6-6.5Mohs
|
Melting Point
|
2980℃
|
Tensile Strength
|
172-207 MPa
|
Yield Strength
|
103-138 MPa
|
Elongation
|
20-30%
|
Specific Heat Capacity
|
25.41J/g·K
|
Coefficient of Linear Expansion
|
8.5x10-8K-1
|
Thermal Conductivity
|
0.67W/m·K
|
Electrical Conductivity
|
0.081Ω-1cm-1
|
Critical Temperature for Superconductivity
|
4.3K
|
Chemical Composition. %
Element
|
Ta
|
C
|
O
|
N
|
H
|
Fe
|
Mo
|
Nb
|
Ni
|
Si
|
Ti
|
W
|
R05200
|
≥ 99.95
|
≤0.01
|
≤0.015
|
≤0.01
|
≤0.0015
|
≤0.01
|
≤0.02
|
≤0.1
|
≤0.01
|
≤0.005
|
≤0.01
|
≤0.05
|
R05400
|
≥ 99.95
|
≤0.01
|
≤0.03
|
≤0.01
|
≤0.0015
|
≤0.01
|
≤0.02
|
≤0.1
|
≤0.01
|
≤0.005
|
≤0.01
|
≤0.05
|
*The above product information is based on theoretical data. For specific requirements and detailed inquiries, please contact us.
Specification
Dimensions
|
Thickness 0.5-10 mm,
Width 50-1000 mm,
Length 50-2000 mm
|
Grade
|
UNS R05200, UNS R05400
|
Standard
|
ASTM B708, ISO 13782, EN 59972, DIN 17848
|
Condition
|
Annealed
|
Purity
|
≥99.9% or 99.95%
|
*If you require tantalum in thicknesses less than those shown here, see tantalum foil.
Tantalum Sheet & Plate Tolerance
Diameter (mm)
|
Diameter Tolerance (mm)
|
Length (mm)
|
Length (mm)
|
2.0-4.0
|
±0.05
|
500-3000
|
±2
|
>4.0-8.0
|
±0.06
|
50-3000
|
±2
|
>8.0-12.0
|
±0.08
|
50-3000
|
±2
|
>12.0-20.0
|
±0.10
|
50-2000
|
±2
|
>20.0-36.0
|
±0.15
|
50-2000
|
±2
|
>36.0-
|
±0.20
|
50-2000
|
±2
|
Tantalum and Tantalum Alloy Grades
Grade
|
Composition
|
Manufacturing Process
|
R05200
|
Unalloyed Tantalum
|
Electron-beam furnace (EB), vacuum-arc melt (VAR), or both
|
R05400
|
Unalloyed Tantalum
|
Powder-metallurgy consolidation
|
R05255
|
90% Tantalum, 10% Tungsten (Ta-10W)
|
Electron-beam furnace (EB), vacuum-arc melt (VAR), or both
|
R05252
|
97.5% Tantalum, 2.5% Tungsten (Ta-2.5W)
|
Electron-beam furnace (EB), vacuum-arc melt (VAR), or both
|
R05240
|
60% Tantalum, 40% Niobium (Ta-40Nb)
|
Electron-beam furnace (EB), vacuum-arc melt (VAR)
|
Other Tantalum and Tantalum Alloy Products Standards
Standard Number
|
Standard Name
|
ASTM B708-12
|
Tantalum and Tantalum Alloy Plates, Sheets, and Strips
|
ASTM B364-2018
|
Tantalum and Tantalum Alloy Ingots
|
ASTM B365-2012
|
Tantalum and Tantalum Alloy Rods and Wires
|
ASTM B521
|
Standard Specification for Seamless and Welded Tantalum and Tantalum Alloy Tubes
|
ISO 13782:1996
|
Surgical Implants – Metallic Materials – Pure Tantalum
|
Tantalum Sheet & Tantalum Plate Applications
- Laboratory Equipment – Used in precision instruments to ensure accuracy in scientific experiments.
- Platinum Substitute – A cost-effective alternative in various industrial processes.
- Superalloy Manufacturing – Enhances strength and durability, especially in electron-beam melting.
- Metallurgy & Machinery Processing – Valued for its corrosion resistance in harsh environments.
- Glass & Ceramics Industry – Provides durability and chemical stability.
- Nickel-Based Superalloys – Acts as an additive to improve performance in extreme conditions.
- Sputtering Targets – Essential for thin-film deposition in semiconductor manufacturing.
- Medical Applications – Used in crafting artificial ears and other medical implants.
- Glass & Metal Seals – Ensures strong, durable bonding in specialized applications.
Tantalum Sheet & Tantalum Plate Packaging
Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

Packaging: Carton, Wooden Box, or Customized.
Material Safety Data Sheet (MSDS) for your reference!
Manufacturing Process
1. Brief Manufacturing Process Flow

2. Testing Method
- Chemical Composition Analysis – Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.
- Mechanical Properties Testing – Includes tensile strength, yield strength, and elongation tests to assess material performance.
- Dimensional Inspection – Measures thickness, width, and length to ensure adherence to specified tolerances.
- Surface Quality Inspection – Checks for defects such as scratches, cracks, or inclusions through visual and ultrasonic examination.
- Hardness Testing – Determines material hardness to confirm uniformity and mechanical reliability.
Tantalum Sheet & Tantalum Plate FAQs
Q1: Why is tantalum treated in a vacuum during heat treatment?
Tantalum reacts actively with oxygen, so it is crucial to avoid exposure to even a small amount of air during heat treatment. This is why almost all heat treatment processes for tantalum are conducted in high vacuum environments, ensuring minimal oxidation and maintaining the material’s purity.
Q2: What is the typical heat treatment temperature for tantalum?
The heat treatment temperature for tantalum typically ranges from 950°C to 1300°C. This range ensures that tantalum and its commonly used alloys do not undergo phase transitions, and the process is primarily intended for annealing. The temperature and cooling rate are not critical, but a slightly extended time helps achieve complete recrystallization.
Q3: How should Tantalum Sheets be stored?
Tantalum Sheets should be stored in a cool, dry place to prevent contamination or damage. They should be kept in a controlled environment to avoid exposure to moisture or reactive gases.
Performance Comparison Table with Competitive Products
Tantalum vs. Niobium vs. Titanium
Property
|
Tantalum (Ta)
|
Niobium (Nb)
|
Titanium (Ti)
|
Density (g/cm³)
|
16.6 (High)
|
8.57 (Medium)
|
4.51 (Low)
|
Melting Point (°C)
|
3017 (Very High)
|
2477 (High)
|
1668 (Medium)
|
Electrical Conductivity (%IACS)
|
13%
|
10%
|
3.1%
|
Thermal Conductivity (W/m·K)
|
57
|
54
|
22
|
Hardness (HV)
|
200-250
|
100-200
|
120-200
|
Elastic Modulus (GPa)
|
186
|
103
|
116
|
Tensile Strength (MPa)
|
200-300
|
300-600
|
400-1100
|
Yield Strength (MPa)
|
120-250
|
200-400
|
275-950
|
Ductility (%)
|
High
|
High
|
High
|
Creep Resistance
|
Excellent
|
Good
|
Moderate
|
Ta1 vs. TaW2.5 vs. TaW10
Grade
|
Ta1
|
TaW2.5
|
TaW10
|
Main Content, %,
|
Ta
|
99.95, min
|
Balance
|
Balance
|
Chemical Compositions (%,max)
|
C
|
0.01
|
0.01
|
0.01
|
N
|
0.005
|
0.01
|
0.01
|
H
|
0.0015
|
0.0015
|
0.0015
|
O
|
0.015
|
0.015
|
0.015
|
Nb
|
0.02
|
0.05
|
0.05
|
Fe
|
0.005
|
0.01
|
0.01
|
Ti
|
0.002
|
0.01
|
0.01
|
W
|
0.005
|
2.0-3.5
|
9.0-11.0
|
Mo
|
0.005
|
0.02
|
0.02
|
Si
|
0.005
|
0.005
|
0.005
|
Ni
|
0.002
|
0.01
|
0.01
|
Mechanical Properties (Annealing)
|
Tensile Strength (MPa, min)
|
172-207
|
276
|
482
|
Yield strength (MPa, min)
|
103-138
|
152-207
|
379-414
|
Elongation (%, min)
|
20-30
|
20-25
|
15-20
|
Production Capacity
|
≥6 ton/year
|
≥6 ton/year
|
≥6 ton/year
|
Related Information
- Raw Materials-Tantalite
Tantalum is a rare metal, constituting only 0.0002% of the Earth's crust, and is commonly found in nature alongside niobium. Although many minerals contain tantalum, only a few qualify as tantalum ores (Ta/Nb ≥ 1). The main industrially valuable tantalum minerals include tantalite [(Fe, Mn)(Ta, Nb)2O6], ferrotantalite (FeTa2O6), microlite [(Na, Ca)Ta2O6(O, OH, F)], and columbotantalite [(Y, Ca, Ce, U, Th)(Nb, Ta, Ti)2O6].
As a professional U.S. supplier of Tantalum Products, Stanford Advanced Materials carefully selects high-quality tantalum ore from around the world to ensure superior purity and performance. We primarily source high-grade tantalite from Australia, one of the world's largest tantalum producers, known for its stable supply and advanced mining technology. Additionally, we prioritize sustainability in mineral sourcing and work with suppliers that comply with Conflict-Free Minerals standards to ensure transparency and regulatory compliance in our supply chain.
- The Leading Importers in USA
In the period from Mar 2023 to Feb 2024, 89 importers were active with DORA INTERNATIONAL, SPARTRONICS VIET NAM CO LTD and PLANSEE USA LLC accounting for 83% of United States's globally total Tantalum imports.
DORA INTERNATIONAL is the leading Tantalum importer in United States, constituting 42% of the total. Following closely is SPARTRONICS VIET NAM CO LTD, with a 21% share of the total. PLANSEE USA LLC occupies the third spot, making up 20% of the total.
Specification
Properties
Density
|
≥16.69 g/cm3
|
Hardness
|
6-6.5Mohs
|
Melting Point
|
2980℃
|
Tensile Strength
|
172-207 MPa
|
Yield Strength
|
103-138 MPa
|
Elongation
|
20-30%
|
Specific Heat Capacity
|
25.41J/g·K
|
Coefficient of Linear Expansion
|
8.5x10-8K-1
|
Thermal Conductivity
|
0.67W/m·K
|
Electrical Conductivity
|
0.081Ω-1cm-1
|
Critical Temperature for Superconductivity
|
4.3K
|
Chemical Composition. %
Element
|
Ta
|
C
|
O
|
N
|
H
|
Fe
|
Mo
|
Nb
|
Ni
|
Si
|
Ti
|
W
|
R05200
|
≥ 99.95
|
≤0.01
|
≤0.015
|
≤0.01
|
≤0.0015
|
≤0.01
|
≤0.02
|
≤0.1
|
≤0.01
|
≤0.005
|
≤0.01
|
≤0.05
|
R05400
|
≥ 99.95
|
≤0.01
|
≤0.03
|
≤0.01
|
≤0.0015
|
≤0.01
|
≤0.02
|
≤0.1
|
≤0.01
|
≤0.005
|
≤0.01
|
≤0.05
|
*The above product information is based on theoretical data. For specific requirements and detailed inquiries, please contact us.
Specification
Dimensions
|
Thickness 0.5-10 mm,
Width 50-1000 mm,
Length 50-2000 mm
|
Grade
|
UNS R05200, UNS R05400
|
Standard
|
ASTM B708, ISO 13782, EN 59972, DIN 17848
|
Condition
|
Annealed
|
Purity
|
≥99.9% or 99.95%
|
*If you require tantalum in thicknesses less than those shown here, see tantalum foil.
Tantalum Sheet & Plate Tolerance
Diameter (mm)
|
Diameter Tolerance (mm)
|
Length (mm)
|
Length (mm)
|
2.0-4.0
|
±0.05
|
500-3000
|
±2
|
>4.0-8.0
|
±0.06
|
50-3000
|
±2
|
>8.0-12.0
|
±0.08
|
50-3000
|
±2
|
>12.0-20.0
|
±0.10
|
50-2000
|
±2
|
>20.0-36.0
|
±0.15
|
50-2000
|
±2
|
>36.0-
|
±0.20
|
50-2000
|
±2
|
Tantalum and Tantalum Alloy Grades
Grade
|
Composition
|
Manufacturing Process
|
R05200
|
Unalloyed Tantalum
|
Electron-beam furnace (EB), vacuum-arc melt (VAR), or both
|
R05400
|
Unalloyed Tantalum
|
Powder-metallurgy consolidation
|
R05255
|
90% Tantalum, 10% Tungsten (Ta-10W)
|
Electron-beam furnace (EB), vacuum-arc melt (VAR), or both
|
R05252
|
97.5% Tantalum, 2.5% Tungsten (Ta-2.5W)
|
Electron-beam furnace (EB), vacuum-arc melt (VAR), or both
|
R05240
|
60% Tantalum, 40% Niobium (Ta-40Nb)
|
Electron-beam furnace (EB), vacuum-arc melt (VAR)
|
Other Tantalum and Tantalum Alloy Products Standards
Standard Number
|
Standard Name
|
ASTM B708-12
|
Tantalum and Tantalum Alloy Plates, Sheets, and Strips
|
ASTM B364-2018
|
Tantalum and Tantalum Alloy Ingots
|
ASTM B365-2012
|
Tantalum and Tantalum Alloy Rods and Wires
|
ASTM B521
|
Standard Specification for Seamless and Welded Tantalum and Tantalum Alloy Tubes
|
ISO 13782:1996
|
Surgical Implants – Metallic Materials – Pure Tantalum
|