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2124 Aluminum vs. 358.0 Aluminum

Both 2124 aluminum and 358.0 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is 2124 aluminum and the bottom bar is 358.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
71
Elongation at Break, % 5.7
3.5 to 6.0
Fatigue Strength, MPa 130
100 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Shear Strength, MPa 280
300 to 320
Tensile Strength: Ultimate (UTS), MPa 490
350 to 370
Tensile Strength: Yield (Proof), MPa 430
290 to 320

Thermal Properties

Latent Heat of Fusion, J/g 390
520
Maximum Temperature: Mechanical, °C 190
170
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 500
560
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
36
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
19
Density, g/cm3 3.0
2.6
Embodied Carbon, kg CO2/kg material 8.2
8.7
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
1090

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
12 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
590 to 710
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
53
Strength to Weight: Axial, points 45
37 to 39
Strength to Weight: Bending, points 46
42 to 44
Thermal Diffusivity, mm2/s 58
63
Thermal Shock Resistance, points 21
16 to 17

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
89.1 to 91.8
Beryllium (Be), % 0
0.1 to 0.3
Chromium (Cr), % 0 to 0.1
0 to 0.2
Copper (Cu), % 3.8 to 4.9
0 to 0.2
Iron (Fe), % 0 to 0.3
0 to 0.3
Magnesium (Mg), % 1.2 to 1.8
0.4 to 0.6
Manganese (Mn), % 0.3 to 0.9
0 to 0.2
Silicon (Si), % 0 to 0.2
7.6 to 8.6
Titanium (Ti), % 0 to 0.15
0.1 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.15