6101 Aluminum vs. ASTM B780 Alloy

6101 aluminum belongs to the aluminum alloys classification, while ASTM B780 alloy belongs to the otherwise unclassified metals. There are 12 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 6101 aluminum and the bottom bar is ASTM B780 alloy.

6101 (E-AlMgSi, 91E) Aluminum ASTM B780 Silver-Copper-Nickel Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		68
Elastic (Young's, Tensile) Modulus, GPa		83

Elongation at Break, %		10 to 25
Elongation at Break, %		1.1 to 9.1

Poisson's Ratio		0.33
Poisson's Ratio		0.36

Shear Modulus, GPa		26
Shear Modulus, GPa		30

Thermal Properties

Latent Heat of Fusion, J/g		400
Latent Heat of Fusion, J/g		140

Specific Heat Capacity, J/kg-K		900
Specific Heat Capacity, J/kg-K		270

Thermal Expansion, µm/m-K		23
Thermal Expansion, µm/m-K		18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		57 to 60
Electrical Conductivity: Equal Volume, % IACS		70 to 76

Electrical Conductivity: Equal Weight (Specific), % IACS		190 to 200
Electrical Conductivity: Equal Weight (Specific), % IACS		62 to 68

Otherwise Unclassified Properties

Density, g/cm³		2.7
Density, g/cm³		10

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		4.5

Stiffness to Weight: Bending, points		50
Stiffness to Weight: Bending, points		14

Alloy Composition

Aluminum (Al), %		97.6 to 99.4
Aluminum (Al), %		0

Boron (B), %		0 to 0.060
Boron (B), %		0

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.050

Chromium (Cr), %		0 to 0.030
Chromium (Cr), %		0

Copper (Cu), %		0 to 0.1
Copper (Cu), %		23.5 to 25.7

Iron (Fe), %		0 to 0.5
Iron (Fe), %		0 to 0.050

Lead (Pb), %		0
Lead (Pb), %		0 to 0.030

Magnesium (Mg), %		0.35 to 0.8
Magnesium (Mg), %		0

Manganese (Mn), %		0 to 0.030
Manganese (Mn), %		0

Nickel (Ni), %		0
Nickel (Ni), %		0.35 to 0.65

Silicon (Si), %		0.3 to 0.7
Silicon (Si), %		0

Silver (Ag), %		0
Silver (Ag), %		74 to 76

Zinc (Zn), %		0 to 0.1
Zinc (Zn), %		0 to 0.060

Residuals, %		0 to 0.1
Residuals, %		0