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3105 Aluminum vs. AWS ER90S-B9

3105 aluminum belongs to the aluminum alloys classification, while AWS ER90S-B9 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 3105 aluminum and the bottom bar is AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 1.1 to 20
18
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 120 to 240
690
Tensile Strength: Yield (Proof), MPa 46 to 220
470

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Melting Completion (Liquidus), °C 660
1450
Melting Onset (Solidus), °C 640
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 170
25
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.0
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1180
91

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
110
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 12 to 24
25
Strength to Weight: Bending, points 20 to 31
22
Thermal Diffusivity, mm2/s 68
6.9
Thermal Shock Resistance, points 5.2 to 11
19

Alloy Composition

Aluminum (Al), % 96 to 99.5
0 to 0.040
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0 to 0.2
8.0 to 10.5
Copper (Cu), % 0 to 0.3
0 to 0.2
Iron (Fe), % 0 to 0.7
84.4 to 90.7
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.2
Molybdenum (Mo), % 0
0.85 to 1.2
Nickel (Ni), % 0
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.6
0.15 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0
0 to 0.5