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4145 Aluminum vs. EN 1.4110 Stainless Steel

4145 aluminum belongs to the aluminum alloys classification, while EN 1.4110 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 4145 aluminum and the bottom bar is EN 1.4110 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 2.2
11 to 14
Fatigue Strength, MPa 48
250 to 730
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
76
Shear Strength, MPa 69
470 to 1030
Tensile Strength: Ultimate (UTS), MPa 120
770 to 1720
Tensile Strength: Yield (Proof), MPa 68
430 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 540
280
Maximum Temperature: Mechanical, °C 160
790
Melting Completion (Liquidus), °C 590
1440
Melting Onset (Solidus), °C 520
1400
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 100
30
Thermal Expansion, µm/m-K 21
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 84
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
8.0
Density, g/cm3 2.8
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.3
Embodied Energy, MJ/kg 140
33
Embodied Water, L/kg 1040
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
90 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 31
480 to 4550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 12
28 to 62
Strength to Weight: Bending, points 19
24 to 41
Thermal Diffusivity, mm2/s 42
8.1
Thermal Shock Resistance, points 5.5
27 to 60

Alloy Composition


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Aluminum (Al), % 83 to 87.4
0
Carbon (C), % 0
0.48 to 0.6
Chromium (Cr), % 0 to 0.15
13 to 15
Copper (Cu), % 3.3 to 4.7
0
Iron (Fe), % 0 to 0.8
81.4 to 86
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
0.5 to 0.8
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 9.3 to 10.7
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Vanadium (V), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0