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Austempered Cast Iron vs. B535.0 Aluminum

Austempered cast iron belongs to the iron alloys classification, while B535.0 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, 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 austempered cast iron and the bottom bar is B535.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 490
65
Elastic (Young's, Tensile) Modulus, GPa 180
66
Elongation at Break, % 1.1 to 13
10
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 62 to 69
25
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
260
Tensile Strength: Yield (Proof), MPa 560 to 1460
130

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Melting Completion (Liquidus), °C 1380
630
Melting Onset (Solidus), °C 1340
550
Specific Heat Capacity, J/kg-K 490
910
Thermal Conductivity, W/m-K 42
96
Thermal Expansion, µm/m-K 13
25

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
9.5
Density, g/cm3 7.5
2.6
Embodied Carbon, kg CO2/kg material 1.8
9.4
Embodied Energy, MJ/kg 25
160
Embodied Water, L/kg 48
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 95
22
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 3970
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 32 to 66
28
Strength to Weight: Bending, points 27 to 44
35
Thermal Diffusivity, mm2/s 11
40
Thermal Shock Resistance, points 25 to 53
11

Alloy Composition

Aluminum (Al), % 0 to 0.050
91.7 to 93.4
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.8
0 to 0.1
Iron (Fe), % 89.6 to 94
0 to 0.15
Magnesium (Mg), % 0 to 0.040
6.5 to 7.5
Manganese (Mn), % 0.3 to 0.4
0 to 0.050
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 2.0
0
Phosphorus (P), % 0 to 0.040
0
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0 to 0.15
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0 to 0.020
0
Titanium (Ti), % 0
0.1 to 0.25
Vanadium (V), % 0 to 0.1
0
Residuals, % 0
0 to 0.15