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EN AC-45000 Aluminum vs. Grade 18 Titanium

EN AC-45000 aluminum belongs to the aluminum alloys classification, while grade 18 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN AC-45000 aluminum and the bottom bar is grade 18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 1.1
11 to 17
Fatigue Strength, MPa 75
330 to 480
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 180
690 to 980
Tensile Strength: Yield (Proof), MPa 110
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 470
410
Maximum Temperature: Mechanical, °C 180
330
Melting Completion (Liquidus), °C 640
1640
Melting Onset (Solidus), °C 520
1590
Specific Heat Capacity, J/kg-K 870
550
Thermal Conductivity, W/m-K 120
8.3
Thermal Expansion, µm/m-K 22
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.7

Otherwise Unclassified Properties

Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 7.7
41
Embodied Energy, MJ/kg 140
670
Embodied Water, L/kg 1070
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 80
1380 to 3110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
35
Strength to Weight: Axial, points 17
43 to 61
Strength to Weight: Bending, points 24
39 to 49
Thermal Diffusivity, mm2/s 47
3.4
Thermal Shock Resistance, points 8.0
47 to 67

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
2.5 to 3.5
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.0 to 5.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.0
0 to 0.25
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0
Nickel (Ni), % 0 to 0.45
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 5.0 to 7.0
0
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0
0 to 0.4