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7003 Aluminum vs. 6351 Aluminum

Both 7003 aluminum and 6351 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 7003 aluminum and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
69
Elongation at Break, % 11
7.8 to 18
Fatigue Strength, MPa 130 to 150
79 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 210 to 230
84 to 200
Tensile Strength: Ultimate (UTS), MPa 350 to 390
140 to 310
Tensile Strength: Yield (Proof), MPa 300 to 310
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 630
650
Melting Onset (Solidus), °C 510
570
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
180
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
46
Electrical Conductivity: Equal Weight (Specific), % IACS 110
150

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
65 to 540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 33 to 37
14 to 32
Strength to Weight: Bending, points 37 to 40
22 to 38
Thermal Diffusivity, mm2/s 59
72
Thermal Shock Resistance, points 15 to 17
6.1 to 14

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
96 to 98.5
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 0.5 to 1.0
0.4 to 0.8
Manganese (Mn), % 0 to 0.3
0.4 to 0.8
Silicon (Si), % 0 to 0.3
0.7 to 1.3
Titanium (Ti), % 0 to 0.2
0 to 0.2
Zinc (Zn), % 5.0 to 6.5
0 to 0.2
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0
0 to 0.15

Comparable Variants