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4145 Aluminum vs. 204.0 Aluminum

Both 4145 aluminum and 204.0 aluminum are aluminum alloys. They have 90% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 4145 aluminum and the bottom bar is 204.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
71
Elongation at Break, % 2.2
5.7 to 7.8
Fatigue Strength, MPa 48
63 to 77
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
27
Tensile Strength: Ultimate (UTS), MPa 120
230 to 340
Tensile Strength: Yield (Proof), MPa 68
180 to 220

Thermal Properties

Latent Heat of Fusion, J/g 540
390
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 590
650
Melting Onset (Solidus), °C 520
580
Specific Heat Capacity, J/kg-K 880
880
Thermal Conductivity, W/m-K 100
120
Thermal Expansion, µm/m-K 21
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
29 to 34
Electrical Conductivity: Equal Weight (Specific), % IACS 84
87 to 100

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 2.8
3.0
Embodied Carbon, kg CO2/kg material 7.6
8.0
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1040
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 31
220 to 350
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 12
21 to 31
Strength to Weight: Bending, points 19
28 to 36
Thermal Diffusivity, mm2/s 42
46
Thermal Shock Resistance, points 5.5
12 to 18

Alloy Composition


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Aluminum (Al), % 83 to 87.4
93.4 to 95.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
4.2 to 5.0
Iron (Fe), % 0 to 0.8
0 to 0.35
Magnesium (Mg), % 0 to 0.15
0.15 to 0.35
Manganese (Mn), % 0 to 0.15
0 to 0.1
Nickel (Ni), % 0
0 to 0.050
Silicon (Si), % 9.3 to 10.7
0 to 0.2
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.3
Zinc (Zn), % 0 to 0.2
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.15