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4004 Aluminum vs. EN 1.4594 Stainless Steel

4004 aluminum belongs to the aluminum alloys classification, while EN 1.4594 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 4004 aluminum and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 2.4
11 to 17
Fatigue Strength, MPa 42
490 to 620
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 63
620 to 700
Tensile Strength: Ultimate (UTS), MPa 110
1020 to 1170
Tensile Strength: Yield (Proof), MPa 60
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 540
280
Maximum Temperature: Mechanical, °C 160
820
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 560
1410
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 130
16
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 8.0
3.2
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1070
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 25
1660 to 3320
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 12
36 to 41
Strength to Weight: Bending, points 20
29 to 31
Thermal Diffusivity, mm2/s 58
4.4
Thermal Shock Resistance, points 5.1
34 to 39

Alloy Composition

Aluminum (Al), % 86 to 90
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
13 to 15
Copper (Cu), % 0 to 0.25
1.2 to 2.0
Iron (Fe), % 0 to 0.8
72.6 to 79.5
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
1.2 to 2.0
Nickel (Ni), % 0
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 9.0 to 10.5
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0