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EN AC-51300 Aluminum vs. EN AC-21100 Aluminum

Both EN AC-51300 aluminum and EN AC-21100 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is EN AC-51300 aluminum and the bottom bar is EN AC-21100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 67
71
Elongation at Break, % 3.7
6.2 to 7.3
Fatigue Strength, MPa 78
79 to 87
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
27
Tensile Strength: Ultimate (UTS), MPa 190
340 to 350
Tensile Strength: Yield (Proof), MPa 110
210 to 240

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 640
670
Melting Onset (Solidus), °C 600
550
Specific Heat Capacity, J/kg-K 910
880
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
34
Electrical Conductivity: Equal Weight (Specific), % IACS 100
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 9.1
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
19 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 87
300 to 400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
46
Strength to Weight: Axial, points 20
31 to 33
Strength to Weight: Bending, points 28
36 to 37
Thermal Diffusivity, mm2/s 45
48
Thermal Shock Resistance, points 8.6
15

Alloy Composition


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Aluminum (Al), % 91.4 to 95.5
93.4 to 95.7
Copper (Cu), % 0 to 0.1
4.2 to 5.2
Iron (Fe), % 0 to 0.55
0 to 0.19
Magnesium (Mg), % 4.5 to 6.5
0
Manganese (Mn), % 0 to 0.45
0 to 0.55
Silicon (Si), % 0 to 0.55
0 to 0.18
Titanium (Ti), % 0 to 0.2
0.15 to 0.3
Zinc (Zn), % 0 to 0.1
0 to 0.070
Residuals, % 0 to 0.15
0 to 0.1