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772.0 Aluminum vs. AWS ERTi-1

772.0 aluminum belongs to the aluminum alloys classification, while AWS ERTi-1 belongs to the titanium alloys.

For each property being compared, the top bar is 772.0 aluminum and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 6.3 to 8.4
24
Fatigue Strength, MPa 94 to 160
120
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 260 to 320
240
Tensile Strength: Yield (Proof), MPa 220 to 250
170

Thermal Properties

Latent Heat of Fusion, J/g 380
420
Maximum Temperature: Mechanical, °C 180
320
Melting Completion (Liquidus), °C 630
1670
Melting Onset (Solidus), °C 580
1620
Specific Heat Capacity, J/kg-K 870
540
Thermal Conductivity, W/m-K 150
21
Thermal Expansion, µm/m-K 24
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 8.0
31
Embodied Energy, MJ/kg 150
510
Embodied Water, L/kg 1140
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 25
52
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 430
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
35
Strength to Weight: Axial, points 25 to 31
15
Strength to Weight: Bending, points 31 to 36
19
Thermal Diffusivity, mm2/s 58
8.7
Thermal Shock Resistance, points 11 to 14
19

Alloy Composition

Aluminum (Al), % 91.2 to 93.2
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0 to 0.15
0 to 0.080
Magnesium (Mg), % 0.6 to 0.8
0
Manganese (Mn), % 0 to 0.1
0
Nitrogen (N), % 0
0 to 0.012
Oxygen (O), % 0
0.030 to 0.1
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0.1 to 0.2
99.773 to 99.97
Zinc (Zn), % 6.0 to 7.0
0
Residuals, % 0 to 0.15
0