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ASTM B596 Au-Cu vs. Grade 12 Titanium

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while grade 12 titanium belongs to the titanium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B596 Au-Cu and the bottom bar is grade 12 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 4.3 to 17
21
Poisson's Ratio 0.41
0.32
Shear Modulus, GPa 36
39
Shear Strength, MPa 280 to 360
330
Tensile Strength: Ultimate (UTS), MPa 450 to 620
530

Thermal Properties

Latent Heat of Fusion, J/g 77
420
Melting Completion (Liquidus), °C 1060
1660
Melting Onset (Solidus), °C 930
1610
Specific Heat Capacity, J/kg-K 150
540
Thermal Expansion, µm/m-K 14
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
6.6

Otherwise Unclassified Properties

Density, g/cm3 18
4.5

Common Calculations

Stiffness to Weight: Axial, points 3.1
13
Stiffness to Weight: Bending, points 8.5
35
Strength to Weight: Axial, points 6.8 to 9.4
32
Strength to Weight: Bending, points 7.1 to 8.8
32
Thermal Shock Resistance, points 22 to 30
37

Alloy Composition

Carbon (C), % 0
0 to 0.080
Copper (Cu), % 9.0 to 11
0
Gold (Au), % 89 to 91
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.3
Molybdenum (Mo), % 0
0.2 to 0.4
Nickel (Ni), % 0
0.6 to 0.9
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Titanium (Ti), % 0
97.6 to 99.2
Residuals, % 0
0 to 0.4