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3004 Aluminum vs. SAE-AISI 8622 Steel

3004 aluminum belongs to the aluminum alloys classification, while SAE-AISI 8622 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 3004 aluminum and the bottom bar is SAE-AISI 8622 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 83
150
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.1 to 19
26
Fatigue Strength, MPa 55 to 120
240
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 100 to 180
320
Tensile Strength: Ultimate (UTS), MPa 170 to 310
500
Tensile Strength: Yield (Proof), MPa 68 to 270
330

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 180
410
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 630
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
38
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1180
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
110
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 18 to 31
18
Strength to Weight: Bending, points 25 to 37
18
Thermal Diffusivity, mm2/s 65
10
Thermal Shock Resistance, points 7.6 to 13
17

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0
Carbon (C), % 0
0.2 to 0.25
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.7
96.9 to 98
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0.7 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0