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4145 Aluminum vs. AWS E308H

4145 aluminum belongs to the aluminum alloys classification, while AWS E308H belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 4145 aluminum and the bottom bar is AWS E308H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 2.2
40
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Tensile Strength: Ultimate (UTS), MPa 120
620

Thermal Properties

Latent Heat of Fusion, J/g 540
290
Melting Completion (Liquidus), °C 590
1420
Melting Onset (Solidus), °C 520
1380
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 100
16
Thermal Expansion, µm/m-K 21
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 84
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
16
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 7.6
3.2
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 1040
150

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 12
22
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 42
4.2
Thermal Shock Resistance, points 5.5
16

Alloy Composition

Aluminum (Al), % 83 to 87.4
0
Carbon (C), % 0
0.040 to 0.080
Chromium (Cr), % 0 to 0.15
18 to 21
Copper (Cu), % 3.3 to 4.7
0 to 0.75
Iron (Fe), % 0 to 0.8
62.9 to 72.5
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
0.5 to 2.5
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 9.3 to 10.7
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0