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EN AC-21100 Aluminum vs. ASTM B541 Gold

EN AC-21100 aluminum belongs to the aluminum alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EN AC-21100 aluminum and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 6.2 to 7.3
6.0 to 14
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 27
38
Tensile Strength: Ultimate (UTS), MPa 340 to 350
670 to 1180
Tensile Strength: Yield (Proof), MPa 210 to 240
480 to 900

Thermal Properties

Latent Heat of Fusion, J/g 390
90
Melting Completion (Liquidus), °C 670
1110
Melting Onset (Solidus), °C 550
930
Specific Heat Capacity, J/kg-K 880
170
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.7 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 100
4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm3 3.0
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
65 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
1090 to 3830
Stiffness to Weight: Axial, points 13
3.4
Stiffness to Weight: Bending, points 46
9.0
Strength to Weight: Axial, points 31 to 33
11 to 19
Strength to Weight: Bending, points 36 to 37
9.8 to 14
Thermal Shock Resistance, points 15
36 to 63

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
0
Copper (Cu), % 4.2 to 5.2
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 0 to 0.19
0
Manganese (Mn), % 0 to 0.55
0
Platinum (Pt), % 0
8.0 to 9.0
Silicon (Si), % 0 to 0.18
0
Silver (Ag), % 0
4.0 to 5.0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
0.7 to 1.3
Residuals, % 0
0 to 0.4