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ASTM B817 Type II vs. ASTM B628 Ag-Cu

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

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

Density, g/cm3 4.6
10

Common Calculations

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

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
26.6 to 29
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
71 to 73
Sodium (Na), % 0 to 0.2
0
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0 to 0.4
0 to 0.21