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ASTM B617 Coin Silver vs. Grade 18 Titanium

ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while grade 18 titanium belongs to the titanium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (11, 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 B617 coin silver and the bottom bar is grade 18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
110
Elongation at Break, % 1.1 to 22
11 to 17
Poisson's Ratio 0.37
0.32
Shear Modulus, GPa 28
40
Shear Strength, MPa 180 to 290
420 to 590
Tensile Strength: Ultimate (UTS), MPa 290 to 520
690 to 980

Thermal Properties

Latent Heat of Fusion, J/g 120
410
Melting Completion (Liquidus), °C 870
1640
Melting Onset (Solidus), °C 780
1590
Specific Heat Capacity, J/kg-K 250
550
Thermal Expansion, µm/m-K 19
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 83
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 72
2.7

Otherwise Unclassified Properties

Density, g/cm3 10
4.5

Common Calculations

Stiffness to Weight: Axial, points 4.1
13
Stiffness to Weight: Bending, points 14
35
Strength to Weight: Axial, points 7.7 to 14
43 to 61
Strength to Weight: Bending, points 9.3 to 14
39 to 49
Thermal Shock Resistance, points 14 to 25
47 to 67

Alloy Composition

Aluminum (Al), % 0 to 0.0050
2.5 to 3.5
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 9.0 to 10.4
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.050
0 to 0.25
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.020
0
Silver (Ag), % 89.6 to 91
0
Titanium (Ti), % 0
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0
0 to 0.4

Comparable Variants