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6101B Aluminum vs. EN 1.4659 Stainless Steel

6101B aluminum belongs to the aluminum alloys classification, while EN 1.4659 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 6101B aluminum and the bottom bar is EN 1.4659 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 9.1 to 13
49
Fatigue Strength, MPa 62 to 70
460
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
81
Shear Strength, MPa 120 to 150
640
Tensile Strength: Ultimate (UTS), MPa 190 to 250
900
Tensile Strength: Yield (Proof), MPa 140 to 180
480

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 630
1430
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 210
12
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 57
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 190
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
8.2
Embodied Carbon, kg CO2/kg material 8.3
6.5
Embodied Energy, MJ/kg 150
89
Embodied Water, L/kg 1190
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 23
370
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 240
550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 20 to 25
31
Strength to Weight: Bending, points 27 to 32
25
Thermal Diffusivity, mm2/s 87
3.2
Thermal Shock Resistance, points 8.5 to 11
19

Alloy Composition

Aluminum (Al), % 98.2 to 99.3
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 0 to 0.050
1.0 to 2.0
Iron (Fe), % 0.1 to 0.3
35.7 to 45.7
Magnesium (Mg), % 0.35 to 0.6
0
Manganese (Mn), % 0 to 0.050
2.0 to 4.0
Molybdenum (Mo), % 0
5.5 to 6.5
Nickel (Ni), % 0
21 to 23
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.3 to 0.6
0 to 0.7
Sulfur (S), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.5
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.1
0