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| Products - Tantalum |
Mechanical Properties of Tantalum and Alloys
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Typical Room Temperature Mechanical Properties of Tantalum and Its Alloys |
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Tantalum |
Ta2.5W |
Ta10W |
Ta40Nb |
| Ultimate Tensile Strength, MPa (KSI) |
276 (40) |
379 (55) |
620 (90) |
310 (45) |
| Yield Strength, MPa (KSI) |
172 (25) |
241 (35) |
482 (70) |
207 (30) |
| % Elongation |
50 |
30 |
30 |
40 |
Modulus of elasticity 103MPa (psi x 106)
... at room temp
... at 750°C |
179 (26)
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179 (26)
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207 (30)
152 (22)
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152 (22)
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| Rockwell B hardness |
35 |
55 |
90 |
35 |
Mechanical Properties for Plate, Sheet and Strip, Annealed Condition
(90% minimum recrystallized) |
Grade and Form |
Ultimate Tensile Strength
min, psi (MPa) |
Yield Strength
min, psi (MPa)
(2% Offset) |
Elongation
min %
(1 in. gauge length) |
Unalloyed tantalum (R05200, R05400)
Plate, sheet and strip
<0.060 in. thick
>0.060 in. thick |
30,000 (207)
25,000 (172)
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20,000 (138)
15,000 (103)
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20
30
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90% tantalum, 10% tungsten (R05255)
Sheet and Strip
Plate |
70,000 (482)
70,000 (482)
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60,000 (414)
55,000 (379)
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15
20
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97.5% tantalum, 2.5% tungsten (R05252)
Sheet and Strip
Plate > 0.187 in. (4.7 mm) |
40,000 (276)
40,000 (276)
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30,000 (207)
22,000 (152)
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20
20
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60% tantalum, 40% niobium (R05240)
Plate, Sheet and Strip
<0.060 in. thick
>0.060 in. thick |
40,000 (276)
35,000 (241)
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20,000 (138)
15,000 (103)
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20
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Mechanical Properties for Rod and Wire, Annealed Condition |
ROD
0.125 in. (3.18 mm) to 2.5 in. (63.5mm) Diameter |
Ultimate Tensile Strength
min., psi (MPa) |
Yield Strength
min., psi (MPa) |
Elongation
min., %* |
Unalloyed tantalum (R05200 and R05400)
97.5% tantalum 2.5% tungsten (R05252)
90% tantalum 10% tungsten (R05255)
60% tantalum 40% niobium (R05240) |
25,000 (172)
40,000 (276)
70,000 (482)
35,000 (241) |
15,000 (103)
20,000 (138)
55,000 (379)
15,000 (103) |
25
20
20
25 |
WIRE
0.010 in. (0.254 mm) to 0.124 in. (3.14 mm) Diameter |
Diameter
inches (mm) |
Ultimate Tensile Strength
min., psi (MPa) |
Elongation
min., %* |
| Unalloyed tantalum (R05200 and R05400) |
0.010 (0.254) to 0.0149 (0.379)
0.015 (0.381) to 0.0249 (0.633)
0.025 (0.635) to 0.1240 (3.140) |
35,000 (241)
35,000 (241)
30,000 (207) |
10
15
20 |
| 97.5% tantalum 2.5% tungsten (R05252) |
0.010 (0.254) to 0.0149 (0.379)
0.015 (0.381) to 0.0249 (0.633)
0.025 (0.635) to 0.1240 (3.140) |
40,000 (276)
40,000 (276)
40,000 (276) |
5
10
15 |
| 90% tantalum 10% tungsten (R05255) |
0.030 (0.762) to 0.1240 (3.140) |
70,000 (482) |
15 |
| 60% tantalum 40% niobium (R05240) |
0.010 (0.254) to 0.0149 (0.379)
0.015 (0.381) to 0.0249 (0.633)
0.025 (0.635) to 0.1240 (3.140) |
40,000 (276)
40,000 (276)
40,000 (276) |
10
15
20 |
- * 10 in. (254 mm) gauge length to 0.050 in. (1.27 mm) diameter and 1 in. (25.4 mm) or 2 in. (50.8 mm) gauge
- Length over 0.050 in. (1.27 mm) diameter
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