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EN AC-45400 Aluminum vs. Grade 18 Titanium

EN AC-45400 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-45400 aluminum and the bottom bar is grade 18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 6.7
11 to 17
Fatigue Strength, MPa 55
330 to 480
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 260
690 to 980
Tensile Strength: Yield (Proof), MPa 130
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 470
410
Maximum Temperature: Mechanical, °C 170
330
Melting Completion (Liquidus), °C 630
1640
Melting Onset (Solidus), °C 560
1590
Specific Heat Capacity, J/kg-K 880
550
Thermal Conductivity, W/m-K 140
8.3
Thermal Expansion, µm/m-K 22
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 95
2.7

Otherwise Unclassified Properties

Density, g/cm3 2.8
4.5
Embodied Carbon, kg CO2/kg material 7.8
41
Embodied Energy, MJ/kg 150
670
Embodied Water, L/kg 1100
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110
1380 to 3110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
35
Strength to Weight: Axial, points 25
43 to 61
Strength to Weight: Bending, points 32
39 to 49
Thermal Diffusivity, mm2/s 54
3.4
Thermal Shock Resistance, points 12
47 to 67

Alloy Composition

Aluminum (Al), % 88.4 to 92.9
2.5 to 3.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 2.6 to 3.6
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.6
0 to 0.25
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.55
0
Nickel (Ni), % 0 to 0.1
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), % 4.5 to 6.0
0
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.25
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.4