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A390.0 Aluminum vs. Grade 27 Titanium

A390.0 aluminum belongs to the aluminum alloys classification, while grade 27 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is A390.0 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
110
Elongation at Break, % 0.87 to 0.91
27
Fatigue Strength, MPa 70 to 100
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
41
Tensile Strength: Ultimate (UTS), MPa 190 to 290
270
Tensile Strength: Yield (Proof), MPa 190 to 290
230

Thermal Properties

Latent Heat of Fusion, J/g 640
420
Maximum Temperature: Mechanical, °C 170
320
Melting Completion (Liquidus), °C 580
1660
Melting Onset (Solidus), °C 480
1610
Specific Heat Capacity, J/kg-K 880
540
Thermal Conductivity, W/m-K 130
21
Thermal Expansion, µm/m-K 20
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 67
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 7.3
33
Embodied Energy, MJ/kg 140
530
Embodied Water, L/kg 950
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.6 to 2.6
70
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 580
240
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
35
Strength to Weight: Axial, points 19 to 30
17
Strength to Weight: Bending, points 27 to 36
21
Thermal Diffusivity, mm2/s 56
8.8
Thermal Shock Resistance, points 9.0 to 14
21

Alloy Composition

Aluminum (Al), % 75.3 to 79.6
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 4.0 to 5.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.2
Magnesium (Mg), % 0.45 to 0.65
0
Manganese (Mn), % 0 to 0.1
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 16 to 18
0
Titanium (Ti), % 0 to 0.2
99 to 99.92
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.4