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EN AC-45500 Aluminum vs. EN AC-42100 Aluminum

Both EN AC-45500 aluminum and EN AC-42100 aluminum are aluminum alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN AC-45500 aluminum and the bottom bar is EN AC-42100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
91
Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 2.8
3.4 to 9.0
Fatigue Strength, MPa 80
76 to 82
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 320
280 to 290
Tensile Strength: Yield (Proof), MPa 250
210 to 230

Thermal Properties

Latent Heat of Fusion, J/g 500
500
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 610
610
Melting Onset (Solidus), °C 600
600
Specific Heat Capacity, J/kg-K 900
910
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 22
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
41
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.6
2.6
Embodied Carbon, kg CO2/kg material 8.0
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.2
9.1 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 430
300 to 370
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 53
53
Strength to Weight: Axial, points 34
30 to 31
Strength to Weight: Bending, points 40
37 to 38
Thermal Diffusivity, mm2/s 65
66
Thermal Shock Resistance, points 15
13

Alloy Composition

Aluminum (Al), % 90.6 to 93.1
91.3 to 93.3
Copper (Cu), % 0.2 to 0.7
0 to 0.050
Iron (Fe), % 0 to 0.25
0 to 0.19
Magnesium (Mg), % 0.2 to 0.45
0.25 to 0.45
Manganese (Mn), % 0 to 0.15
0 to 0.1
Silicon (Si), % 6.5 to 7.5
6.5 to 7.5
Titanium (Ti), % 0 to 0.2
0 to 0.25
Zinc (Zn), % 0 to 0.070
0 to 0.070
Residuals, % 0
0 to 0.1