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6025 Aluminum vs. EN 1.4618 Stainless Steel

6025 aluminum belongs to the aluminum alloys classification, while EN 1.4618 stainless steel belongs to the iron alloys. There are 30 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 6025 aluminum and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 2.8 to 10
51
Fatigue Strength, MPa 67 to 110
240 to 250
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 110 to 140
480 to 500
Tensile Strength: Ultimate (UTS), MPa 190 to 240
680 to 700
Tensile Strength: Yield (Proof), MPa 68 to 210
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 160
900
Melting Completion (Liquidus), °C 650
1400
Melting Onset (Solidus), °C 550
1360
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.8
7.7
Embodied Carbon, kg CO2/kg material 8.5
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.0 to 15
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 310
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 19 to 24
24 to 25
Strength to Weight: Bending, points 26 to 31
22 to 23
Thermal Diffusivity, mm2/s 54
4.0
Thermal Shock Resistance, points 8.2 to 10
15 to 16

Alloy Composition

Aluminum (Al), % 91.7 to 96.3
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.2
16.5 to 18.5
Copper (Cu), % 0.2 to 0.7
1.0 to 2.5
Iron (Fe), % 0 to 0.7
62.7 to 72.5
Magnesium (Mg), % 2.1 to 3.0
0
Manganese (Mn), % 0.6 to 1.4
5.5 to 9.5
Nickel (Ni), % 0
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0
0 to 0.070
Silicon (Si), % 0.8 to 1.5
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.15
0