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Grade 2 Titanium vs. C355.0 Aluminum

Grade 2 titanium belongs to the titanium alloys classification, while C355.0 aluminum belongs to the aluminum alloys. There are 30 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 2 titanium and the bottom bar is C355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
86 to 90
Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 23
2.7 to 3.8
Fatigue Strength, MPa 250
76 to 84
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 38
26
Tensile Strength: Ultimate (UTS), MPa 420
290 to 310
Tensile Strength: Yield (Proof), MPa 360
200 to 230

Thermal Properties

Latent Heat of Fusion, J/g 420
470
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
620
Melting Onset (Solidus), °C 1610
570
Specific Heat Capacity, J/kg-K 540
900
Thermal Conductivity, W/m-K 22
150
Thermal Expansion, µm/m-K 9.0
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
39
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
130

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 31
8.0
Embodied Energy, MJ/kg 510
150
Embodied Water, L/kg 110
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
7.5 to 9.8
Resilience: Unit (Modulus of Resilience), kJ/m3 600
290 to 380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 26
30 to 32
Strength to Weight: Bending, points 28
36 to 37
Thermal Diffusivity, mm2/s 8.9
60
Thermal Shock Resistance, points 32
13 to 14

Alloy Composition

Aluminum (Al), % 0
91.7 to 94.1
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
1.0 to 1.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 0.2
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
4.5 to 5.5
Titanium (Ti), % 98.9 to 100
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15