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7178 Aluminum vs. EN 1.0597 Cast Steel

7178 aluminum belongs to the aluminum alloys classification, while EN 1.0597 cast steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 7178 aluminum and the bottom bar is EN 1.0597 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.5 to 12
18
Fatigue Strength, MPa 120 to 210
270
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 240 to 640
670
Tensile Strength: Yield (Proof), MPa 120 to 560
400

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 180
400
Melting Completion (Liquidus), °C 630
1470
Melting Onset (Solidus), °C 480
1430
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 130
53
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
1.7
Density, g/cm3 3.1
7.9
Embodied Carbon, kg CO2/kg material 8.2
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1110
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
100
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 21 to 58
24
Strength to Weight: Bending, points 28 to 54
22
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 10 to 28
21

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.6 to 2.4
0
Iron (Fe), % 0 to 0.5
99.935 to 100
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0 to 0.15
0