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5251 Aluminum vs. C443.0 Aluminum

Both 5251 aluminum and C443.0 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 5251 aluminum and the bottom bar is C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 44 to 79
65
Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 2.0 to 19
9.0
Fatigue Strength, MPa 59 to 110
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 110 to 160
130
Tensile Strength: Ultimate (UTS), MPa 180 to 280
230
Tensile Strength: Yield (Proof), MPa 67 to 250
100

Thermal Properties

Latent Heat of Fusion, J/g 400
470
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 650
630
Melting Onset (Solidus), °C 610
600
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 150
140
Thermal Expansion, µm/m-K 24
22

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.5
7.9
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
17
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
70
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
51
Strength to Weight: Axial, points 18 to 29
24
Strength to Weight: Bending, points 26 to 35
31
Thermal Diffusivity, mm2/s 61
58
Thermal Shock Resistance, points 7.9 to 13
10

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
89.6 to 95.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.6
Iron (Fe), % 0 to 0.5
0 to 2.0
Magnesium (Mg), % 1.7 to 2.4
0 to 0.1
Manganese (Mn), % 0.1 to 0.5
0 to 0.35
Nickel (Ni), % 0
0 to 0.5
Silicon (Si), % 0 to 0.4
4.5 to 6.0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0 to 0.5
Residuals, % 0 to 0.15
0 to 0.25