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384.0 Aluminum vs. 705.0 Aluminum

Both 384.0 aluminum and 705.0 aluminum are aluminum alloys. They have 84% 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 384.0 aluminum and the bottom bar is 705.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
62 to 65
Elastic (Young's, Tensile) Modulus, GPa 74
69
Elongation at Break, % 2.5
8.4 to 10
Fatigue Strength, MPa 140
63 to 98
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
26
Tensile Strength: Ultimate (UTS), MPa 330
240 to 260
Tensile Strength: Yield (Proof), MPa 170
130

Thermal Properties

Latent Heat of Fusion, J/g 550
390
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 580
640
Melting Onset (Solidus), °C 530
610
Specific Heat Capacity, J/kg-K 870
890
Thermal Conductivity, W/m-K 96
140
Thermal Expansion, µm/m-K 21
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
34
Electrical Conductivity: Equal Weight (Specific), % IACS 69
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 2.9
2.8
Embodied Carbon, kg CO2/kg material 7.4
8.4
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1010
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
18 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 190
120 to 130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
49
Strength to Weight: Axial, points 32
24 to 26
Strength to Weight: Bending, points 37
31 to 32
Thermal Diffusivity, mm2/s 39
55
Thermal Shock Resistance, points 15
11

Alloy Composition


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Aluminum (Al), % 77.3 to 86.5
92.3 to 98.6
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 3.0 to 4.5
0 to 0.2
Iron (Fe), % 0 to 1.3
0 to 0.8
Magnesium (Mg), % 0 to 0.1
1.4 to 1.8
Manganese (Mn), % 0 to 0.5
0 to 0.6
Nickel (Ni), % 0 to 0.5
0
Silicon (Si), % 10.5 to 12
0 to 0.2
Tin (Sn), % 0 to 0.35
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 3.0
0 to 3.3
Residuals, % 0 to 0.5
0 to 0.15