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7175 Aluminum vs. Grade 1 Titanium

7175 aluminum belongs to the aluminum alloys classification, while grade 1 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 7175 aluminum and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 3.8 to 5.9
28
Fatigue Strength, MPa 150 to 180
170
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 26
39
Shear Strength, MPa 290 to 330
200
Tensile Strength: Ultimate (UTS), MPa 520 to 570
310
Tensile Strength: Yield (Proof), MPa 430 to 490
220

Thermal Properties

Latent Heat of Fusion, J/g 380
420
Maximum Temperature: Mechanical, °C 180
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 480
1610
Specific Heat Capacity, J/kg-K 870
540
Thermal Conductivity, W/m-K 140
20
Thermal Expansion, µm/m-K 23
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 99
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
37
Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 8.2
31
Embodied Energy, MJ/kg 150
510
Embodied Water, L/kg 1130
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 29
79
Resilience: Unit (Modulus of Resilience), kJ/m3 1310 to 1730
230
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
35
Strength to Weight: Axial, points 48 to 52
19
Strength to Weight: Bending, points 48 to 51
23
Thermal Diffusivity, mm2/s 53
8.2
Thermal Shock Resistance, points 23 to 25
24

Alloy Composition

Aluminum (Al), % 88 to 91.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.2
0 to 0.2
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.1
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.1
99.095 to 100
Zinc (Zn), % 5.1 to 6.1
0
Residuals, % 0
0 to 0.4