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7049 Aluminum vs. AWS E70C-Ni2

7049 aluminum belongs to the aluminum alloys classification, while AWS E70C-Ni2 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 7049 aluminum and the bottom bar is AWS E70C-Ni2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2 to 7.0
27
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 510 to 530
560
Tensile Strength: Yield (Proof), MPa 420 to 450
450

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 480
1410
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 130
52
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
3.3
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.6
Embodied Energy, MJ/kg 140
22
Embodied Water, L/kg 1110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 46 to 47
20
Strength to Weight: Bending, points 46 to 47
19
Thermal Diffusivity, mm2/s 51
14
Thermal Shock Resistance, points 22 to 23
17

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
0 to 0.35
Iron (Fe), % 0 to 0.35
94.1 to 98.3
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0 to 1.3
Nickel (Ni), % 0
1.8 to 2.8
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.25
0 to 0.9
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0
0 to 0.5