MakeItFrom.com
Menu (ESC)

851.0 Aluminum vs. 4145 Aluminum

Both 851.0 aluminum and 4145 aluminum are aluminum alloys. They have 89% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is 851.0 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
73
Elongation at Break, % 3.9 to 9.1
2.2
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Tensile Strength: Ultimate (UTS), MPa 130 to 140
120

Thermal Properties

Latent Heat of Fusion, J/g 410
540
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 630
590
Melting Onset (Solidus), °C 360
520
Specific Heat Capacity, J/kg-K 850
880
Thermal Conductivity, W/m-K 180
100
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
26
Electrical Conductivity: Equal Weight (Specific), % IACS 140
84

Otherwise Unclassified Properties

Base Metal Price, % relative 14
10
Density, g/cm3 3.1
2.8
Embodied Carbon, kg CO2/kg material 8.4
7.6
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 1140
1040

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 12 to 13
12
Strength to Weight: Bending, points 19 to 20
19
Thermal Diffusivity, mm2/s 69
42
Thermal Shock Resistance, points 6.1 to 6.3
5.5

Alloy Composition

Aluminum (Al), % 86.6 to 91.5
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0.7 to 1.3
3.3 to 4.7
Iron (Fe), % 0 to 0.7
0 to 0.8
Magnesium (Mg), % 0 to 0.1
0 to 0.15
Manganese (Mn), % 0 to 0.1
0 to 0.15
Nickel (Ni), % 0.3 to 0.7
0
Silicon (Si), % 2.0 to 3.0
9.3 to 10.7
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15