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7010 Aluminum vs. ASTM B685 Alloy

7010 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 (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 7010 aluminum and the bottom bar is ASTM B685 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Poisson's Ratio 0.32
0.37
Shear Modulus, GPa 26
43
Tensile Strength: Ultimate (UTS), MPa 520 to 590
660 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 380
180
Melting Completion (Liquidus), °C 630
1230
Melting Onset (Solidus), °C 480
1200
Specific Heat Capacity, J/kg-K 860
300
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
4.1

Otherwise Unclassified Properties

Density, g/cm3 3.0
11

Common Calculations

Stiffness to Weight: Axial, points 13
6.1
Stiffness to Weight: Bending, points 45
15
Strength to Weight: Axial, points 47 to 54
17 to 27
Strength to Weight: Bending, points 47 to 52
16 to 21
Thermal Shock Resistance, points 22 to 26
28 to 46

Alloy Composition

Aluminum (Al), % 87.9 to 90.6
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 1.5 to 2.0
39.5 to 40.5
Iron (Fe), % 0 to 0.15
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 2.1 to 2.6
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.050
0
Palladium (Pd), % 0
59 to 60.5
Silicon (Si), % 0 to 0.12
0
Silver (Ag), % 0
0 to 0.1
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.7 to 6.7
0 to 0.060
Zirconium (Zr), % 0.1 to 0.16
0
Residuals, % 0
0 to 0.2