MakeItFrom.com
Menu (ESC)

Grade 27 Titanium vs. 8021 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 8021 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 27
2.3
Fatigue Strength, MPa 170
61
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 270
160
Tensile Strength: Yield (Proof), MPa 230
130

Thermal Properties

Latent Heat of Fusion, J/g 420
400
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1610
640
Specific Heat Capacity, J/kg-K 540
900
Thermal Conductivity, W/m-K 21
220
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
56
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
180

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.0
Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 33
8.1
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 240
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
49
Strength to Weight: Axial, points 17
16
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 8.8
88
Thermal Shock Resistance, points 21
7.0

Alloy Composition

Aluminum (Al), % 0
98 to 98.8
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
1.2 to 1.7
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.15
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0
0 to 0.15