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7175 Aluminum vs. AWS E90C-D2

7175 aluminum belongs to the aluminum alloys classification, while AWS E90C-D2 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, 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 7175 aluminum and the bottom bar is AWS E90C-D2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.8 to 5.9
19
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 520 to 570
690
Tensile Strength: Yield (Proof), MPa 430 to 490
620

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 480
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 140
49
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 99
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.5
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.6
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1130
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 29
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1310 to 1730
1010
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 48 to 52
25
Strength to Weight: Bending, points 48 to 51
22
Thermal Diffusivity, mm2/s 53
13
Thermal Shock Resistance, points 23 to 25
20

Alloy Composition

Aluminum (Al), % 88 to 91.4
0
Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.35
Iron (Fe), % 0 to 0.2
95.5 to 98.6
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.1
1.0 to 1.9
Molybdenum (Mo), % 0
0.4 to 0.6
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.15
0 to 0.9
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 5.1 to 6.1
0
Residuals, % 0
0 to 0.5