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4007-O Aluminum vs. Annealed SAE-AISI 4028

4007-O aluminum belongs to the aluminum alloys classification, while annealed SAE-AISI 4028 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 4007-O aluminum and the bottom bar is annealed SAE-AISI 4028.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 32
150
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 23
23
Fatigue Strength, MPa 56
180
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 80
310
Tensile Strength: Ultimate (UTS), MPa 130
490
Tensile Strength: Yield (Proof), MPa 50
260

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
49
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.1
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1160
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
95
Resilience: Unit (Modulus of Resilience), kJ/m3 18
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 12
17
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 67
13
Thermal Shock Resistance, points 5.5
16

Alloy Composition

Aluminum (Al), % 94.1 to 97.6
0
Carbon (C), % 0
0.25 to 0.3
Chromium (Cr), % 0.050 to 0.25
0
Cobalt (Co), % 0 to 0.050
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0.4 to 1.0
98.1 to 98.7
Magnesium (Mg), % 0 to 0.2
0
Manganese (Mn), % 0.8 to 1.5
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0.15 to 0.7
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 1.0 to 1.7
0.15 to 0.35
Sulfur (S), % 0
0.035 to 0.050
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0