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1050A Aluminum vs. ASTM B685 Alloy

1050A aluminum belongs to the aluminum alloys classification, while ASTM B685 alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (14, 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 1050A aluminum and the bottom bar is ASTM B685 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
120
Poisson's Ratio 0.33
0.37
Shear Modulus, GPa 26
43
Tensile Strength: Ultimate (UTS), MPa 68 to 170
660 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 400
180
Melting Completion (Liquidus), °C 660
1230
Melting Onset (Solidus), °C 650
1200
Specific Heat Capacity, J/kg-K 900
300
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 59
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 200
4.1

Otherwise Unclassified Properties

Density, g/cm3 2.7
11

Common Calculations

Stiffness to Weight: Axial, points 14
6.1
Stiffness to Weight: Bending, points 50
15
Strength to Weight: Axial, points 6.9 to 18
17 to 27
Strength to Weight: Bending, points 14 to 25
16 to 21
Thermal Shock Resistance, points 3.0 to 7.6
28 to 46

Alloy Composition

Aluminum (Al), % 99.5 to 100
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 0 to 0.050
39.5 to 40.5
Iron (Fe), % 0 to 0.4
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0
Palladium (Pd), % 0
59 to 60.5
Silicon (Si), % 0 to 0.25
0
Silver (Ag), % 0
0 to 0.1
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.070
0 to 0.060
Residuals, % 0
0 to 0.2

Comparable Variants