This document presents the mechanical properties of tantalum and its alloys at room temperature, covering tensile strength, yield strength, elongation, and modulus of elasticity. It provides critical data for material selection in high – performance applications like electronics, aerospace, and chemical processing.
Typical Room Temperature Mechanical Properties
Alloy Designation
Ultimate Tensile Strength (UTS)
Yield Strength (YS)
Elongation (%)
Modulus of Elasticity (×10⁶ psi / GPa)
Ta – 2.5W
216 (1482)
179 (1235)
30
27.3 (188)
Ta – 10W
273 (1882)
219 (1510)
25
30.7 (212)
Ta – 2.5W – 0.1Hf
462 (3190)
372 (2570)
15
30.7 (212)
Mechanical Properties for Plate, Sheet, and Strip (Annealed Condition)
Grade and Form
Ultimate Tensile Strength (UTS)
Yield Strength (YS)
Elongation (%)
Unalloyed tantalum (R05200, R05400)
Plate, Sheet, and Strip, 0.250 in. thick
30,000 (207)
18,000 (124)
30
<0.250 in. thick
35,000 (241)
22,000 (152)
25
20% tantalum – 10% tungsten (R05250)
70,000 (483)
50,000 (345)
15
Plate, Sheet, and Strip
75,000 (517)
55,000 (379)
10
10% tantalum – 2.5% tungsten (R05230)
45,000 (310)
30,000 (207)
20
Plate, Sheet, and Strip
50,000 (345)
35,000 (241)
15
60% tantalum – 40% niobium (R05240)
40,000 (276)
22,000 (152)
20
Plate, Sheet, and Strip, 0.250 in. thick
40,000 (276)
22,000 (152)
20
<0.250 in. thick
38,000 (262)
18,000 (124)
25
Mechanical Properties for Rod, Wire, and Bar (Annealed Condition)
ROD
Diameter Specification
Ultimate Tensile Strength (UTS)
Yield Strength (YS)
Elongation (%)
0.125 in. (3.18 mm) to 2.5 in. (63.5 mm) Diameter
Unalloyed tantalum (R05200, R05400)
35,000 (241)
18,000 (124)
20
20% tantalum – 10% tungsten (R05250)
70,000 (483)
50,000 (345)
20
60% tantalum – 40% niobium (R05240)
35,000 (241)
18,000 (124)
20
WIRE
Diameter Specification
Ultimate Tensile Strength (UTS)
Yield Strength (YS)
Elongation (%)
0.010 in. (0.254 mm) to 0.124 in. (3.15 mm) Diameter
Unalloyed tantalum (R05200, R05400)
35,000 (241)
18,000 (124)
20
20% tantalum – 10% tungsten (R05250)
70,000 (483)
50,000 (345)
10
60% tantalum – 40% niobium (R05240)
35,000 (241)
18,000 (124)
15
Application Significance
High – Temperature Environments: Alloys like Ta – 10W (UTS = 273 MPa) excel in aerospace engine components.
Structural Integrity: Consistent YS and UTS across forms (plate, wire) ensure reliability in critical designs.
Quality Assurance
Data aligns with industry standards for tantalum alloys, supporting compliance in sectors like defense, energy, and advanced manufacturing. Ideal for engineers verifying material performance against design requirements.
