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1050A Aluminum vs. SAE-AISI 4028 Steel

1050A aluminum belongs to the aluminum alloys classification, while SAE-AISI 4028 steel belongs to the iron alloys. 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 1050A aluminum and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 20 to 45
150 to 190
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 33
14 to 23
Fatigue Strength, MPa 22 to 55
180 to 330
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 44 to 97
310 to 380
Tensile Strength: Ultimate (UTS), MPa 68 to 170
490 to 630
Tensile Strength: Yield (Proof), MPa 22 to 150
260 to 520

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
49
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 59
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 200
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.1
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.5
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1200
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.9 to 19
81 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 3.7 to 160
180 to 720
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 6.9 to 18
17 to 22
Strength to Weight: Bending, points 14 to 25
18 to 21
Thermal Diffusivity, mm2/s 94
13
Thermal Shock Resistance, points 3.0 to 7.6
16 to 20

Alloy Composition

Aluminum (Al), % 99.5 to 100
0
Carbon (C), % 0
0.25 to 0.3
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.4
98.1 to 98.7
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.25
0.15 to 0.35
Sulfur (S), % 0
0.035 to 0.050
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.070
0

Comparable Variants