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295.0 Aluminum vs. CR021A Copper

295.0 aluminum belongs to the aluminum alloys classification, while CR021A copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 295.0 aluminum and the bottom bar is CR021A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 2.0 to 7.2
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
43
Tensile Strength: Ultimate (UTS), MPa 230 to 280
230
Tensile Strength: Yield (Proof), MPa 100 to 220
140

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 170
200
Melting Completion (Liquidus), °C 640
1090
Melting Onset (Solidus), °C 530
1040
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 140
380
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
98
Electrical Conductivity: Equal Weight (Specific), % IACS 100
99

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 3.0
9.0
Embodied Carbon, kg CO2/kg material 7.9
2.6
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1140
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2 to 13
31
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 340
83
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 21 to 26
7.1
Strength to Weight: Bending, points 27 to 32
9.3
Thermal Diffusivity, mm2/s 54
110
Thermal Shock Resistance, points 9.8 to 12
8.1

Alloy Composition

Aluminum (Al), % 91.4 to 95.3
0
Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 4.0 to 5.0
99.95 to 99.998
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0 to 0.030
0
Manganese (Mn), % 0 to 0.35
0
Phosphorus (P), % 0
0.0020 to 0.0070
Silicon (Si), % 0.7 to 1.5
0
Silver (Ag), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0