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EN 1.7703 Steel vs. EN AC-43100 Aluminum

EN 1.7703 steel belongs to the iron alloys classification, while EN AC-43100 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-43100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
60 to 94
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 20
1.1 to 2.5
Fatigue Strength, MPa 320 to 340
68 to 76
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 74
27
Tensile Strength: Ultimate (UTS), MPa 670 to 690
180 to 270
Tensile Strength: Yield (Proof), MPa 460 to 500
97 to 230

Thermal Properties

Latent Heat of Fusion, J/g 250
540
Maximum Temperature: Mechanical, °C 460
170
Melting Completion (Liquidus), °C 1470
600
Melting Onset (Solidus), °C 1430
590
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 39
140
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
130

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
9.5
Density, g/cm3 7.9
2.6
Embodied Carbon, kg CO2/kg material 2.5
7.8
Embodied Energy, MJ/kg 35
150
Embodied Water, L/kg 61
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
2.9 to 5.7
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
66 to 360
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
54
Strength to Weight: Axial, points 24
20 to 29
Strength to Weight: Bending, points 22
28 to 36
Thermal Diffusivity, mm2/s 11
60
Thermal Shock Resistance, points 19 to 20
8.6 to 12

Alloy Composition

Aluminum (Al), % 0
86.9 to 90.8
Carbon (C), % 0.11 to 0.15
0
Chromium (Cr), % 2.0 to 2.5
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 94.6 to 96.4
0 to 0.55
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.2 to 0.45
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 to 0.050
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
9.0 to 11
Sulfur (S), % 0 to 0.0050
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.030
0 to 0.15
Vanadium (V), % 0.25 to 0.35
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15