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242.0 Aluminum vs. 7178 Aluminum

Both 242.0 aluminum and 7178 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 242.0 aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
71
Elongation at Break, % 0.5 to 1.5
4.5 to 12
Fatigue Strength, MPa 55 to 110
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
27
Shear Strength, MPa 150 to 240
140 to 380
Tensile Strength: Ultimate (UTS), MPa 180 to 290
240 to 640
Tensile Strength: Yield (Proof), MPa 120 to 220
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 390
370
Maximum Temperature: Mechanical, °C 210
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 530
480
Specific Heat Capacity, J/kg-K 870
860
Thermal Conductivity, W/m-K 130 to 170
130
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 44
31
Electrical Conductivity: Equal Weight (Specific), % IACS 96 to 130
91

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 3.1
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.3 to 3.4
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 340
110 to 2220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
45
Strength to Weight: Axial, points 16 to 26
21 to 58
Strength to Weight: Bending, points 23 to 32
28 to 54
Thermal Diffusivity, mm2/s 50 to 62
47
Thermal Shock Resistance, points 8.0 to 13
10 to 28

Alloy Composition

Aluminum (Al), % 88.4 to 93.6
85.4 to 89.5
Chromium (Cr), % 0 to 0.25
0.18 to 0.28
Copper (Cu), % 3.5 to 4.5
1.6 to 2.4
Iron (Fe), % 0 to 1.0
0 to 0.5
Magnesium (Mg), % 1.2 to 1.8
2.4 to 3.1
Manganese (Mn), % 0 to 0.35
0 to 0.3
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.7
0 to 0.4
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 0 to 0.35
6.3 to 7.3
Residuals, % 0
0 to 0.15

Comparable Variants