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5251 Aluminum vs. AWS ERTi-1

5251 aluminum belongs to the aluminum alloys classification, while AWS ERTi-1 belongs to the titanium 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 5251 aluminum and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 2.0 to 19
24
Fatigue Strength, MPa 59 to 110
120
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 180 to 280
240
Tensile Strength: Yield (Proof), MPa 67 to 250
170

Thermal Properties

Latent Heat of Fusion, J/g 400
420
Maximum Temperature: Mechanical, °C 180
320
Melting Completion (Liquidus), °C 650
1670
Melting Onset (Solidus), °C 610
1620
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 150
21
Thermal Expansion, µm/m-K 24
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 120
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.5
31
Embodied Energy, MJ/kg 150
510
Embodied Water, L/kg 1180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
52
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 18 to 29
15
Strength to Weight: Bending, points 26 to 35
19
Thermal Diffusivity, mm2/s 61
8.7
Thermal Shock Resistance, points 7.9 to 13
19

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0 to 0.5
0 to 0.080
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
0
Nitrogen (N), % 0
0 to 0.012
Oxygen (O), % 0
0.030 to 0.1
Silicon (Si), % 0 to 0.4
0
Titanium (Ti), % 0 to 0.15
99.773 to 99.97
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0