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EN AC-21100 Aluminum vs. 3105 Aluminum

Both EN AC-21100 aluminum and 3105 aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN AC-21100 aluminum and the bottom bar is 3105 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
29 to 67
Elastic (Young's, Tensile) Modulus, GPa 71
69
Elongation at Break, % 6.2 to 7.3
1.1 to 20
Fatigue Strength, MPa 79 to 87
39 to 95
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Tensile Strength: Ultimate (UTS), MPa 340 to 350
120 to 240
Tensile Strength: Yield (Proof), MPa 210 to 240
46 to 220

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 670
660
Melting Onset (Solidus), °C 550
640
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 130
170
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
44
Electrical Conductivity: Equal Weight (Specific), % IACS 100
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.0
2.8
Embodied Carbon, kg CO2/kg material 8.0
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
2.6 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
15 to 340
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
50
Strength to Weight: Axial, points 31 to 33
12 to 24
Strength to Weight: Bending, points 36 to 37
20 to 31
Thermal Diffusivity, mm2/s 48
68
Thermal Shock Resistance, points 15
5.2 to 11

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
96 to 99.5
Chromium (Cr), % 0
0 to 0.2
Copper (Cu), % 4.2 to 5.2
0 to 0.3
Iron (Fe), % 0 to 0.19
0 to 0.7
Magnesium (Mg), % 0
0.2 to 0.8
Manganese (Mn), % 0 to 0.55
0.3 to 0.8
Silicon (Si), % 0 to 0.18
0 to 0.6
Titanium (Ti), % 0.15 to 0.3
0 to 0.1
Zinc (Zn), % 0 to 0.070
0 to 0.4
Residuals, % 0 to 0.1
0 to 0.15