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EN AC-44400 Aluminum vs. EN AC-51400 Aluminum

Both EN AC-44400 aluminum and EN AC-51400 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 91% 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-51400 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61
71
Elastic (Young's, Tensile) Modulus, GPa 71
67
Elongation at Break, % 4.1
3.4
Fatigue Strength, MPa 79
85
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
25
Tensile Strength: Ultimate (UTS), MPa 210
190
Tensile Strength: Yield (Proof), MPa 110
120

Thermal Properties

Latent Heat of Fusion, J/g 540
400
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 590
600
Specific Heat Capacity, J/kg-K 900
910
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
31
Electrical Conductivity: Equal Weight (Specific), % IACS 110
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.6
2.7
Embodied Carbon, kg CO2/kg material 7.8
9.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1080
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.3
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 85
110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
51
Strength to Weight: Axial, points 23
20
Strength to Weight: Bending, points 31
28
Thermal Diffusivity, mm2/s 60
46
Thermal Shock Resistance, points 9.8
8.6

Alloy Composition

Aluminum (Al), % 87.1 to 92
90.5 to 95.5
Copper (Cu), % 0 to 0.1
0 to 0.050
Iron (Fe), % 0 to 0.65
0 to 0.55
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0 to 0.1
4.5 to 6.5
Manganese (Mn), % 0 to 0.5
0 to 0.45
Nickel (Ni), % 0 to 0.050
0
Silicon (Si), % 8.0 to 11
0 to 1.5
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.15
0 to 0.2
Zinc (Zn), % 0 to 0.15
0 to 0.1
Residuals, % 0
0 to 0.15