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EN 1.3551 Steel vs. 712.0 Aluminum

EN 1.3551 steel belongs to the iron alloys classification, while 712.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 1.3551 steel and the bottom bar is 712.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
75 to 90
Elastic (Young's, Tensile) Modulus, GPa 190
70
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 75
27
Tensile Strength: Ultimate (UTS), MPa 720
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 260
380
Maximum Temperature: Mechanical, °C 530
190
Melting Completion (Liquidus), °C 1490
640
Melting Onset (Solidus), °C 1450
610
Specific Heat Capacity, J/kg-K 460
870
Thermal Conductivity, W/m-K 36
160
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
40
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.5
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 4.9
8.0
Embodied Energy, MJ/kg 71
150
Embodied Water, L/kg 82
1140

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 26
24 to 25
Strength to Weight: Bending, points 23
30 to 31
Thermal Diffusivity, mm2/s 9.8
62
Thermal Shock Resistance, points 21
11

Alloy Composition

Aluminum (Al), % 0
90.7 to 94
Carbon (C), % 0.77 to 0.85
0
Chromium (Cr), % 3.9 to 4.3
0.4 to 0.6
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 88.8 to 91.1
0 to 0.5
Magnesium (Mg), % 0
0.5 to 0.65
Manganese (Mn), % 0.15 to 0.35
0 to 0.1
Molybdenum (Mo), % 4.0 to 4.5
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 0.3
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.15 to 0.25
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0
Zinc (Zn), % 0
5.0 to 6.5
Residuals, % 0
0 to 0.2