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EN AC-44400 Aluminum vs. EN AC-21000 Aluminum

Both EN AC-44400 aluminum and EN AC-21000 aluminum are aluminum alloys. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is EN AC-44400 aluminum and the bottom bar is EN AC-21000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61
100
Elastic (Young's, Tensile) Modulus, GPa 71
71
Elongation at Break, % 4.1
6.7
Fatigue Strength, MPa 79
100
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Tensile Strength: Ultimate (UTS), MPa 210
340
Tensile Strength: Yield (Proof), MPa 110
240

Thermal Properties

Latent Heat of Fusion, J/g 540
390
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 600
670
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
34
Electrical Conductivity: Equal Weight (Specific), % IACS 110
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.6
3.0
Embodied Carbon, kg CO2/kg material 7.8
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1080
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.3
21
Resilience: Unit (Modulus of Resilience), kJ/m3 85
390
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 54
46
Strength to Weight: Axial, points 23
32
Strength to Weight: Bending, points 31
36
Thermal Diffusivity, mm2/s 60
49
Thermal Shock Resistance, points 9.8
15

Alloy Composition

Aluminum (Al), % 87.1 to 92
93.4 to 95.5
Copper (Cu), % 0 to 0.1
4.2 to 5.0
Iron (Fe), % 0 to 0.65
0 to 0.35
Lead (Pb), % 0 to 0.050
0 to 0.050
Magnesium (Mg), % 0 to 0.1
0.15 to 0.35
Manganese (Mn), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 0 to 0.050
0 to 0.050
Silicon (Si), % 8.0 to 11
0 to 0.2
Tin (Sn), % 0 to 0.050
0 to 0.050
Titanium (Ti), % 0 to 0.15
0.15 to 0.3
Zinc (Zn), % 0 to 0.15
0 to 0.1
Residuals, % 0
0 to 0.1