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EN 1.8818 Steel vs. 712.0 Aluminum

EN 1.8818 steel belongs to the iron alloys classification, while 712.0 aluminum belongs to the aluminum alloys. There are 31 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 EN 1.8818 steel and the bottom bar is 712.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
75 to 90
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 27
4.5 to 4.7
Fatigue Strength, MPa 200
140 to 180
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
27
Shear Strength, MPa 280
180
Tensile Strength: Ultimate (UTS), MPa 440
250 to 260
Tensile Strength: Yield (Proof), MPa 270
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
610
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 48
160
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 1.6
8.0
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 49
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
11
Resilience: Unit (Modulus of Resilience), kJ/m3 200
240 to 270
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 16
24 to 25
Strength to Weight: Bending, points 16
30 to 31
Thermal Diffusivity, mm2/s 13
62
Thermal Shock Resistance, points 13
11

Alloy Composition


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Aluminum (Al), % 0.015 to 0.034
90.7 to 94
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 0 to 0.35
0.4 to 0.6
Copper (Cu), % 0 to 0.6
0 to 0.25
Iron (Fe), % 95.9 to 99.985
0 to 0.5
Magnesium (Mg), % 0
0.5 to 0.65
Manganese (Mn), % 0 to 1.6
0 to 0.1
Molybdenum (Mo), % 0 to 0.13
0
Nickel (Ni), % 0 to 0.35
0
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.017
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.55
0 to 0.3
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.060
0.15 to 0.25
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 0
5.0 to 6.5
Residuals, % 0
0 to 0.2