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1200 Aluminum vs. SAE-AISI 1042 Steel

1200 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1042 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 1200 aluminum and the bottom bar is SAE-AISI 1042 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 23 to 48
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 1.1 to 28
14 to 18
Fatigue Strength, MPa 25 to 69
230 to 370
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 54 to 100
380 to 420
Tensile Strength: Ultimate (UTS), MPa 85 to 180
620 to 700
Tensile Strength: Yield (Proof), MPa 28 to 160
340 to 580

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 660
1460
Melting Onset (Solidus), °C 650
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
52
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 190
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.0 to 19
87 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 5.7 to 180
320 to 900
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 8.7 to 19
22 to 25
Strength to Weight: Bending, points 16 to 26
21 to 22
Thermal Diffusivity, mm2/s 92
14
Thermal Shock Resistance, points 3.8 to 8.1
20 to 22

Alloy Composition

Aluminum (Al), % 99 to 100
0
Carbon (C), % 0
0.4 to 0.47
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 1.0
98.5 to 99
Manganese (Mn), % 0 to 0.050
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0