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5251 Aluminum vs. ASTM B628 Ag-Cu

5251 aluminum belongs to the aluminum alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. 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 5251 aluminum and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
83
Elongation at Break, % 2.0 to 19
1.1 to 17
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 26
31
Shear Strength, MPa 110 to 160
210 to 430
Tensile Strength: Ultimate (UTS), MPa 180 to 280
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 400
140
Melting Completion (Liquidus), °C 650
780
Melting Onset (Solidus), °C 610
780
Specific Heat Capacity, J/kg-K 900
280
Thermal Expansion, µm/m-K 24
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
84
Electrical Conductivity: Equal Weight (Specific), % IACS 120
75

Otherwise Unclassified Properties

Density, g/cm3 2.7
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.6
Stiffness to Weight: Bending, points 50
14
Strength to Weight: Axial, points 18 to 29
9.5 to 21
Strength to Weight: Bending, points 26 to 35
11 to 18
Thermal Shock Resistance, points 7.9 to 13
16 to 34

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
26.6 to 29
Iron (Fe), % 0 to 0.5
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.4
0
Silver (Ag), % 0
71 to 73
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0 to 0.060
Residuals, % 0
0 to 0.21

Comparable Variants