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6105 Aluminum vs. Austempered Cast Iron

6105 aluminum belongs to the aluminum alloys classification, while austempered cast iron belongs to the iron alloys. There are 25 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 6105 aluminum and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
180
Elongation at Break, % 9.0 to 16
1.1 to 13
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
62 to 69
Tensile Strength: Ultimate (UTS), MPa 190 to 280
860 to 1800
Tensile Strength: Yield (Proof), MPa 120 to 270
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Melting Completion (Liquidus), °C 650
1380
Melting Onset (Solidus), °C 600
1340
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 180 to 190
42
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.9
Density, g/cm3 2.7
7.5
Embodied Carbon, kg CO2/kg material 8.3
1.8
Embodied Energy, MJ/kg 150
25
Embodied Water, L/kg 1180
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 27
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 550
880 to 3970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 20 to 29
32 to 66
Strength to Weight: Bending, points 28 to 35
27 to 44
Thermal Diffusivity, mm2/s 72 to 79
11
Thermal Shock Resistance, points 8.6 to 12
25 to 53

Alloy Composition

Aluminum (Al), % 97.2 to 99
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0
3.4 to 3.8
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0 to 0.1
0 to 0.8
Iron (Fe), % 0 to 0.35
89.6 to 94
Magnesium (Mg), % 0.45 to 0.8
0 to 0.040
Manganese (Mn), % 0 to 0.1
0.3 to 0.4
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0.6 to 1.0
2.3 to 2.7
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0