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ASTM B596 Au-Cu vs. R05240 Alloy

Both ASTM B596 Au-Cu and R05240 alloy 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 B596 Au-Cu and the bottom bar is R05240 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
150
Elongation at Break, % 4.3 to 17
25
Poisson's Ratio 0.41
0.36
Shear Modulus, GPa 36
57
Tensile Strength: Ultimate (UTS), MPa 450 to 620
270

Thermal Properties

Latent Heat of Fusion, J/g 77
210
Specific Heat Capacity, J/kg-K 150
190
Thermal Expansion, µm/m-K 14
6.8

Otherwise Unclassified Properties

Density, g/cm3 18
14

Common Calculations

Stiffness to Weight: Axial, points 3.1
6.3
Stiffness to Weight: Bending, points 8.5
13
Strength to Weight: Axial, points 6.8 to 9.4
5.4
Strength to Weight: Bending, points 7.1 to 8.8
6.8
Thermal Shock Resistance, points 22 to 30
18

Alloy Composition

Carbon (C), % 0
0 to 0.010
Copper (Cu), % 9.0 to 11
0
Gold (Au), % 89 to 91
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0
0 to 0.010
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
35 to 42
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
57.9 to 65
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Residuals, % 0 to 0.4
0