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ASTM B628 Ag-Cu vs. ASTM B817 Type II

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while ASTM B817 type II belongs to the titanium alloys. There are 16 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 II.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 140
400
Melting Completion (Liquidus), °C 780
1580
Melting Onset (Solidus), °C 780
1530
Specific Heat Capacity, J/kg-K 280
550
Thermal Expansion, µm/m-K 19
9.9

Otherwise Unclassified Properties

Density, g/cm3 10
4.6

Common Calculations

Stiffness to Weight: Axial, points 4.6
13
Stiffness to Weight: Bending, points 14
34
Strength to Weight: Axial, points 9.5 to 21
55 to 58
Strength to Weight: Bending, points 11 to 18
45 to 47
Thermal Shock Resistance, points 16 to 34
62 to 66

Alloy Composition

Aluminum (Al), % 0 to 0.0050
5.0 to 6.0
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
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.050
0.35 to 1.0
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
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.1 to 87.8
Vanadium (V), % 0
5.0 to 6.0
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0 to 0.21
0 to 0.4