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7204 Aluminum vs. EN 1.4826 Stainless Steel

7204 aluminum belongs to the aluminum alloys classification, while EN 1.4826 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 7204 aluminum and the bottom bar is EN 1.4826 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 11 to 13
9.1
Fatigue Strength, MPa 110 to 130
140
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 220 to 380
500
Tensile Strength: Yield (Proof), MPa 120 to 310
260

Thermal Properties

Latent Heat of Fusion, J/g 380
310
Maximum Temperature: Mechanical, °C 210
950
Melting Completion (Liquidus), °C 640
1400
Melting Onset (Solidus), °C 520
1360
Specific Heat Capacity, J/kg-K 880
490
Thermal Conductivity, W/m-K 150
14
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
17
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.4
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1140
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 40
39
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 710
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 21 to 36
18
Strength to Weight: Bending, points 28 to 40
18
Thermal Diffusivity, mm2/s 58
3.7
Thermal Shock Resistance, points 9.4 to 16
11

Alloy Composition

Aluminum (Al), % 90.5 to 94.8
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0 to 0.3
21 to 23
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
60.4 to 68.7
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0.2 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.3
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0