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EN 1.7703 Steel vs. EN AC-51100 Aluminum

EN 1.7703 steel belongs to the iron alloys classification, while EN AC-51100 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.7703 steel and the bottom bar is EN AC-51100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
57
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 20
4.5
Fatigue Strength, MPa 320 to 340
58
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 74
26
Tensile Strength: Ultimate (UTS), MPa 670 to 690
160
Tensile Strength: Yield (Proof), MPa 460 to 500
80

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 460
170
Melting Completion (Liquidus), °C 1470
640
Melting Onset (Solidus), °C 1430
620
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 39
130
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
34
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
110

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 2.5
8.7
Embodied Energy, MJ/kg 35
150
Embodied Water, L/kg 61
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
6.0
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
47
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 11
53
Thermal Shock Resistance, points 19 to 20
7.3

Alloy Composition

Aluminum (Al), % 0
94.5 to 97.5
Carbon (C), % 0.11 to 0.15
0
Chromium (Cr), % 2.0 to 2.5
0
Copper (Cu), % 0 to 0.2
0 to 0.050
Iron (Fe), % 94.6 to 96.4
0 to 0.55
Magnesium (Mg), % 0
2.5 to 3.5
Manganese (Mn), % 0.3 to 0.6
0 to 0.45
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0 to 0.25
0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.1
0 to 0.55
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 0 to 0.030
0 to 0.2
Vanadium (V), % 0.25 to 0.35
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15