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Half-hard ASTM B780 Alloy vs. Half-hard Palladium

Both half-hard ASTM B780 alloy and half-hard palladium are otherwise unclassified metals. Both are furnished in the half-hard temper. There are 18 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is half-hard ASTM B780 alloy and the bottom bar is half-hard palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
120
Elongation at Break, % 3.4
1.1
Poisson's Ratio 0.36
0.39
Shear Modulus, GPa 30
43
Shear Strength, MPa 250
200
Tensile Strength: Ultimate (UTS), MPa 440
360

Thermal Properties

Latent Heat of Fusion, J/g 140
160
Melting Completion (Liquidus), °C 860
1550
Specific Heat Capacity, J/kg-K 270
240
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 73
16
Electrical Conductivity: Equal Weight (Specific), % IACS 65
12

Otherwise Unclassified Properties

Density, g/cm3 10
12

Common Calculations

Stiffness to Weight: Axial, points 4.5
5.6
Stiffness to Weight: Bending, points 14
14
Strength to Weight: Axial, points 12
8.2
Strength to Weight: Bending, points 13
9.3
Thermal Shock Resistance, points 21
18

Alloy Composition


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Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 23.5 to 25.7
0
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0.35 to 0.65
0
Palladium (Pd), % 0
99.8 to 100
Silver (Ag), % 74 to 76
0
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0
0 to 0.2