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5449 Aluminum vs. 7175 Aluminum

Both 5449 aluminum and 7175 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 5449 aluminum and the bottom bar is 7175 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 4.0 to 17
3.8 to 5.9
Fatigue Strength, MPa 78 to 120
150 to 180
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 130 to 190
290 to 330
Tensile Strength: Ultimate (UTS), MPa 210 to 330
520 to 570
Tensile Strength: Yield (Proof), MPa 91 to 260
430 to 490

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 590
480
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 140
140
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
33
Electrical Conductivity: Equal Weight (Specific), % IACS 110
99

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.8
3.0
Embodied Carbon, kg CO2/kg material 8.5
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 29
18 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 480
1310 to 1730
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 22 to 33
48 to 52
Strength to Weight: Bending, points 29 to 39
48 to 51
Thermal Diffusivity, mm2/s 56
53
Thermal Shock Resistance, points 9.4 to 15
23 to 25

Alloy Composition

Aluminum (Al), % 94.1 to 97.8
88 to 91.4
Chromium (Cr), % 0 to 0.3
0.18 to 0.28
Copper (Cu), % 0 to 0.3
1.2 to 2.0
Iron (Fe), % 0 to 0.7
0 to 0.2
Magnesium (Mg), % 1.6 to 2.6
2.1 to 2.9
Manganese (Mn), % 0.6 to 1.1
0 to 0.1
Silicon (Si), % 0 to 0.4
0 to 0.15
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.3
5.1 to 6.1
Residuals, % 0
0 to 0.15