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SAE-AISI 1144 Steel vs. EN AC-47100 Aluminum

SAE-AISI 1144 steel belongs to the iron alloys classification, while EN AC-47100 aluminum belongs to the aluminum alloys. There are 30 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 SAE-AISI 1144 steel and the bottom bar is EN AC-47100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
80
Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 11 to 17
1.1
Fatigue Strength, MPa 280 to 430
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Tensile Strength: Ultimate (UTS), MPa 750 to 840
270
Tensile Strength: Yield (Proof), MPa 420 to 690
160

Thermal Properties

Latent Heat of Fusion, J/g 250
570
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1450
590
Melting Onset (Solidus), °C 1410
560
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 51
130
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
30
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
100

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 1.4
7.6
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 47
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 110
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 1290
170
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 27 to 30
28
Strength to Weight: Bending, points 23 to 25
35
Thermal Diffusivity, mm2/s 14
54
Thermal Shock Resistance, points 22 to 24
12

Alloy Composition

Aluminum (Al), % 0
81.4 to 88.8
Carbon (C), % 0.4 to 0.48
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 97.5 to 98
0 to 1.3
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 1.4 to 1.7
0 to 0.55
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
10.5 to 13.5
Sulfur (S), % 0.24 to 0.33
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25