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Grade Ti-Pd8A Titanium vs. 4145 Aluminum

Grade Ti-Pd8A titanium belongs to the titanium alloys classification, while 4145 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 Ti-Pd8A titanium and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
73
Elongation at Break, % 13
2.2
Fatigue Strength, MPa 260
48
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
28
Tensile Strength: Ultimate (UTS), MPa 500
120
Tensile Strength: Yield (Proof), MPa 430
68

Thermal Properties

Latent Heat of Fusion, J/g 420
540
Maximum Temperature: Mechanical, °C 320
160
Melting Completion (Liquidus), °C 1660
590
Melting Onset (Solidus), °C 1610
520
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 21
100
Thermal Expansion, µm/m-K 8.7
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.5
26
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
84

Otherwise Unclassified Properties

Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 49
7.6
Embodied Energy, MJ/kg 840
140
Embodied Water, L/kg 520
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 880
31
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
50
Strength to Weight: Axial, points 31
12
Strength to Weight: Bending, points 31
19
Thermal Diffusivity, mm2/s 8.6
42
Thermal Shock Resistance, points 39
5.5

Alloy Composition

Aluminum (Al), % 0
83 to 87.4
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0
3.3 to 4.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.8
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.4
0
Palladium (Pd), % 0.12 to 0.3
0
Silicon (Si), % 0
9.3 to 10.7
Titanium (Ti), % 98.8 to 99.9
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0 to 0.4
0 to 0.15