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319.0-T5 Aluminum vs. 851.0-T5 Aluminum

Both 319.0-T5 aluminum and 851.0-T5 aluminum are aluminum alloys. Both are furnished in the T5 temper. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 319.0-T5 aluminum and the bottom bar is 851.0-T5 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
45
Elastic (Young's, Tensile) Modulus, GPa 72
69
Elongation at Break, % 1.8
3.9
Fatigue Strength, MPa 76
62
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 170
96
Tensile Strength: Ultimate (UTS), MPa 200
130
Tensile Strength: Yield (Proof), MPa 180
76

Thermal Properties

Latent Heat of Fusion, J/g 480
410
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 600
630
Melting Onset (Solidus), °C 540
360
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 880
850
Thermal Conductivity, W/m-K 110
180
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
46
Electrical Conductivity: Equal Weight (Specific), % IACS 84
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
14
Density, g/cm3 2.9
3.1
Embodied Carbon, kg CO2/kg material 7.7
8.4
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 1080
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4
4.5
Resilience: Unit (Modulus of Resilience), kJ/m3 220
42
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
45
Strength to Weight: Axial, points 19
12
Strength to Weight: Bending, points 27
19
Thermal Diffusivity, mm2/s 44
69
Thermal Shock Resistance, points 9.2
6.1

Alloy Composition

Aluminum (Al), % 85.8 to 91.5
86.6 to 91.5
Copper (Cu), % 3.0 to 4.0
0.7 to 1.3
Iron (Fe), % 0 to 1.0
0 to 0.7
Magnesium (Mg), % 0 to 0.1
0 to 0.1
Manganese (Mn), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 0 to 0.35
0.3 to 0.7
Silicon (Si), % 5.5 to 6.5
2.0 to 3.0
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0
0 to 0.3