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Grade 31 Titanium vs. EN AC-51200 Aluminum

Grade 31 titanium belongs to the titanium alloys classification, while EN AC-51200 aluminum belongs to the aluminum 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 grade 31 titanium and the bottom bar is EN AC-51200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
67
Elongation at Break, % 20
1.1
Fatigue Strength, MPa 300
100
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
25
Tensile Strength: Ultimate (UTS), MPa 510
220
Tensile Strength: Yield (Proof), MPa 450
150

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
570
Specific Heat Capacity, J/kg-K 540
910
Thermal Conductivity, W/m-K 21
92
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
22
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
74

Otherwise Unclassified Properties

Density, g/cm3 4.5
2.6
Embodied Carbon, kg CO2/kg material 36
9.6
Embodied Energy, MJ/kg 600
150
Embodied Water, L/kg 230
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 940
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 32
31
Thermal Diffusivity, mm2/s 8.5
39
Thermal Shock Resistance, points 39
10

Alloy Composition


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Aluminum (Al), % 0
84.5 to 92
Carbon (C), % 0 to 0.080
0
Cobalt (Co), % 0.2 to 0.8
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 1.0
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
8.0 to 10.5
Manganese (Mn), % 0
0 to 0.55
Nickel (Ni), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
0 to 2.5
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 97.9 to 99.76
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0 to 0.4
0 to 0.15