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ASTM B780 Alloy vs. R05200 Tantalum

Both ASTM B780 alloy and R05200 tantalum are otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
190
Elongation at Break, % 1.1 to 9.1
1.1 to 28
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 30
69
Tensile Strength: Ultimate (UTS), MPa 330 to 590
210 to 540

Thermal Properties

Latent Heat of Fusion, J/g 140
140
Specific Heat Capacity, J/kg-K 270
140
Thermal Expansion, µm/m-K 18
6.5

Otherwise Unclassified Properties

Density, g/cm3 10
17

Common Calculations

Stiffness to Weight: Axial, points 4.5
6.2
Stiffness to Weight: Bending, points 14
11
Strength to Weight: Axial, points 9.1 to 16
3.6 to 9.0
Strength to Weight: Bending, points 11 to 15
4.8 to 8.8
Thermal Shock Resistance, points 16 to 29
13 to 32

Alloy Composition

Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 23.5 to 25.7
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.050
0 to 0.010
Lead (Pb), % 0 to 0.030
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0.35 to 0.65
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 74 to 76
0
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.060
0

Comparable Variants