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4007 Aluminum vs. 5251 Aluminum

Both 4007 aluminum and 5251 aluminum are aluminum alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is 4007 aluminum and the bottom bar is 5251 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 32 to 44
44 to 79
Elastic (Young's, Tensile) Modulus, GPa 71
68
Elongation at Break, % 5.1 to 23
2.0 to 19
Fatigue Strength, MPa 46 to 88
59 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 80 to 90
110 to 160
Tensile Strength: Ultimate (UTS), MPa 130 to 160
180 to 280
Tensile Strength: Yield (Proof), MPa 50 to 120
67 to 250

Thermal Properties

Latent Heat of Fusion, J/g 410
400
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 590
610
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 170
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
37
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.5
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1160
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.4 to 23
5.4 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 110
33 to 450
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
50
Strength to Weight: Axial, points 12 to 15
18 to 29
Strength to Weight: Bending, points 20 to 23
26 to 35
Thermal Diffusivity, mm2/s 67
61
Thermal Shock Resistance, points 5.5 to 6.7
7.9 to 13

Alloy Composition

Aluminum (Al), % 94.1 to 97.6
95.5 to 98.2
Chromium (Cr), % 0.050 to 0.25
0 to 0.15
Cobalt (Co), % 0 to 0.050
0
Copper (Cu), % 0 to 0.2
0 to 0.15
Iron (Fe), % 0.4 to 1.0
0 to 0.5
Magnesium (Mg), % 0 to 0.2
1.7 to 2.4
Manganese (Mn), % 0.8 to 1.5
0.1 to 0.5
Nickel (Ni), % 0.15 to 0.7
0
Silicon (Si), % 1.0 to 1.7
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.15
Zinc (Zn), % 0 to 0.1
0 to 0.15
Residuals, % 0
0 to 0.15

Comparable Variants