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EN AC-44300 Aluminum vs. Grade 18 Titanium

EN AC-44300 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-44300 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, % 1.1
11 to 17
Fatigue Strength, MPa 100
330 to 480
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 270
690 to 980
Tensile Strength: Yield (Proof), MPa 150
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 570
410
Maximum Temperature: Mechanical, °C 170
330
Melting Completion (Liquidus), °C 590
1640
Melting Onset (Solidus), °C 580
1590
Specific Heat Capacity, J/kg-K 900
550
Thermal Conductivity, W/m-K 130
8.3
Thermal Expansion, µm/m-K 21
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.7

Otherwise Unclassified Properties

Density, g/cm3 2.5
4.5
Embodied Carbon, kg CO2/kg material 7.7
41
Embodied Energy, MJ/kg 140
670
Embodied Water, L/kg 1050
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1380 to 3110
Stiffness to Weight: Axial, points 16
13
Stiffness to Weight: Bending, points 55
35
Strength to Weight: Axial, points 29
43 to 61
Strength to Weight: Bending, points 36
39 to 49
Thermal Diffusivity, mm2/s 58
3.4
Thermal Shock Resistance, points 13
47 to 67

Alloy Composition

Aluminum (Al), % 84.3 to 89.5
2.5 to 3.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.0
0 to 0.25
Manganese (Mn), % 0 to 0.55
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), % 10.5 to 13.5
0
Titanium (Ti), % 0 to 0.15
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0
0 to 0.4