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ASTM B628 Ag-Cu vs. Grade 15 Titanium

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while grade 15 titanium belongs to the titanium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, 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 B628 Ag-Cu and the bottom bar is grade 15 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Elongation at Break, % 1.1 to 17
20
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 31
41
Shear Strength, MPa 210 to 430
340
Tensile Strength: Ultimate (UTS), MPa 350 to 760
540

Thermal Properties

Latent Heat of Fusion, J/g 140
420
Melting Completion (Liquidus), °C 780
1660
Melting Onset (Solidus), °C 780
1610
Specific Heat Capacity, J/kg-K 280
540
Thermal Expansion, µm/m-K 19
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 75
6.7

Otherwise Unclassified Properties

Density, g/cm3 10
4.5

Common Calculations

Stiffness to Weight: Axial, points 4.6
13
Stiffness to Weight: Bending, points 14
35
Strength to Weight: Axial, points 9.5 to 21
33
Strength to Weight: Bending, points 11 to 18
33
Thermal Shock Resistance, points 16 to 34
41

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 26.6 to 29
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.050
0 to 0.3
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
0.4 to 0.6
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.040 to 0.060
Silver (Ag), % 71 to 73
0
Titanium (Ti), % 0
98.2 to 99.56
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0 to 0.21
0 to 0.4