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6105 Aluminum vs. EN 1.4371 Stainless Steel

6105 aluminum belongs to the aluminum alloys classification, while EN 1.4371 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 6105 aluminum and the bottom bar is EN 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 9.0 to 16
45 to 51
Fatigue Strength, MPa 95 to 130
290 to 340
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 120 to 170
520 to 540
Tensile Strength: Ultimate (UTS), MPa 190 to 280
740 to 750
Tensile Strength: Yield (Proof), MPa 120 to 270
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 160
880
Melting Completion (Liquidus), °C 650
1410
Melting Onset (Solidus), °C 600
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 180 to 190
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46 to 50
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 150 to 170
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 150
38
Embodied Water, L/kg 1180
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 27
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 550
250 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 20 to 29
27
Strength to Weight: Bending, points 28 to 35
24
Thermal Diffusivity, mm2/s 72 to 79
4.0
Thermal Shock Resistance, points 8.6 to 12
16

Alloy Composition

Aluminum (Al), % 97.2 to 99
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.1
16 to 17.5
Copper (Cu), % 0 to 0.1
0 to 1.0
Iron (Fe), % 0 to 0.35
66.7 to 74.4
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.1
6.0 to 8.0
Nickel (Ni), % 0
3.5 to 5.5
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.6 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0