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5056 Aluminum vs. 4145 Aluminum

Both 5056 aluminum and 4145 aluminum are aluminum alloys. They have 86% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 5056 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
73
Elongation at Break, % 4.9 to 31
2.2
Fatigue Strength, MPa 140 to 200
48
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
28
Shear Strength, MPa 170 to 240
69
Tensile Strength: Ultimate (UTS), MPa 290 to 460
120
Tensile Strength: Yield (Proof), MPa 150 to 410
68

Thermal Properties

Latent Heat of Fusion, J/g 400
540
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 570
520
Specific Heat Capacity, J/kg-K 910
880
Thermal Conductivity, W/m-K 130
100
Thermal Expansion, µm/m-K 24
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
26
Electrical Conductivity: Equal Weight (Specific), % IACS 99
84

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
2.8
Embodied Carbon, kg CO2/kg material 9.0
7.6
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1180
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 140
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 1220
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
50
Strength to Weight: Axial, points 30 to 48
12
Strength to Weight: Bending, points 36 to 50
19
Thermal Diffusivity, mm2/s 53
42
Thermal Shock Resistance, points 13 to 20
5.5

Alloy Composition

Aluminum (Al), % 93 to 95.4
83 to 87.4
Chromium (Cr), % 0.050 to 0.2
0 to 0.15
Copper (Cu), % 0 to 0.1
3.3 to 4.7
Iron (Fe), % 0 to 0.4
0 to 0.8
Magnesium (Mg), % 4.5 to 5.6
0 to 0.15
Manganese (Mn), % 0.050 to 0.2
0 to 0.15
Silicon (Si), % 0 to 0.3
9.3 to 10.7
Zinc (Zn), % 0 to 0.1
0 to 0.2
Residuals, % 0
0 to 0.15