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5251 Aluminum vs. 242.0 Aluminum

Both 5251 aluminum and 242.0 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 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 5251 aluminum and the bottom bar is 242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 44 to 79
70 to 110
Elastic (Young's, Tensile) Modulus, GPa 68
73
Elongation at Break, % 2.0 to 19
0.5 to 1.5
Fatigue Strength, MPa 59 to 110
55 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 110 to 160
150 to 240
Tensile Strength: Ultimate (UTS), MPa 180 to 280
180 to 290
Tensile Strength: Yield (Proof), MPa 67 to 250
120 to 220

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 610
530
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 150
130 to 170
Thermal Expansion, µm/m-K 24
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
33 to 44
Electrical Conductivity: Equal Weight (Specific), % IACS 120
96 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.5
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
1.3 to 3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
110 to 340
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 18 to 29
16 to 26
Strength to Weight: Bending, points 26 to 35
23 to 32
Thermal Diffusivity, mm2/s 61
50 to 62
Thermal Shock Resistance, points 7.9 to 13
8.0 to 13

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
88.4 to 93.6
Chromium (Cr), % 0 to 0.15
0 to 0.25
Copper (Cu), % 0 to 0.15
3.5 to 4.5
Iron (Fe), % 0 to 0.5
0 to 1.0
Magnesium (Mg), % 1.7 to 2.4
1.2 to 1.8
Manganese (Mn), % 0.1 to 0.5
0 to 0.35
Nickel (Ni), % 0
1.7 to 2.3
Silicon (Si), % 0 to 0.4
0 to 0.7
Titanium (Ti), % 0 to 0.15
0 to 0.25
Zinc (Zn), % 0 to 0.15
0 to 0.35
Residuals, % 0 to 0.15
0 to 0.15

Comparable Variants