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ASTM B628 Ag-Cu vs. ASTM B817 Type I

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while ASTM B817 type I belongs to the titanium alloys. There are 18 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 B628 Ag-Cu and the bottom bar is ASTM B817 type I.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
100
Elongation at Break, % 1.1 to 17
4.0 to 13
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 31
40
Tensile Strength: Ultimate (UTS), MPa 350 to 760
770 to 960

Thermal Properties

Latent Heat of Fusion, J/g 140
410
Melting Completion (Liquidus), °C 780
1600
Melting Onset (Solidus), °C 780
1550
Specific Heat Capacity, J/kg-K 280
560
Thermal Expansion, µm/m-K 19
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 75
2.0

Otherwise Unclassified Properties

Density, g/cm3 10
4.4

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
48 to 60
Strength to Weight: Bending, points 11 to 18
42 to 49
Thermal Shock Resistance, points 16 to 34
54 to 68

Alloy Composition

Aluminum (Al), % 0 to 0.0050
5.5 to 6.8
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Copper (Cu), % 26.6 to 29
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.050
0 to 0.4
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 71 to 73
0
Sodium (Na), % 0
0 to 0.2
Titanium (Ti), % 0
87 to 91
Vanadium (V), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0 to 0.21
0 to 0.4