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Grade 25 Titanium vs. 328.0 Aluminum

Grade 25 titanium belongs to the titanium alloys classification, while 328.0 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 25 titanium and the bottom bar is 328.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
72
Elongation at Break, % 11
1.6 to 2.1
Fatigue Strength, MPa 550
55 to 80
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Tensile Strength: Ultimate (UTS), MPa 1000
200 to 270
Tensile Strength: Yield (Proof), MPa 940
120 to 170

Thermal Properties

Latent Heat of Fusion, J/g 410
510
Maximum Temperature: Mechanical, °C 340
180
Melting Completion (Liquidus), °C 1610
620
Melting Onset (Solidus), °C 1560
560
Specific Heat Capacity, J/kg-K 560
890
Thermal Conductivity, W/m-K 7.1
120
Thermal Expansion, µm/m-K 9.6
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
99

Otherwise Unclassified Properties

Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 43
7.8
Embodied Energy, MJ/kg 700
140
Embodied Water, L/kg 320
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
2.8 to 5.0
Resilience: Unit (Modulus of Resilience), kJ/m3 4220
92 to 200
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 62
21 to 28
Strength to Weight: Bending, points 50
28 to 34
Thermal Diffusivity, mm2/s 2.8
50
Thermal Shock Resistance, points 71
9.2 to 12

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
84.5 to 91.1
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.35
Copper (Cu), % 0
1.0 to 2.0
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.4
0 to 1.0
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 0
0.2 to 0.6
Nickel (Ni), % 0.3 to 0.8
0 to 0.25
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
7.5 to 8.5
Titanium (Ti), % 86.7 to 90.6
0 to 0.25
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5