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2095 Aluminum vs. EN 1.4659 Stainless Steel

2095 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 (5, 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 2095 aluminum and the bottom bar is EN 1.4659 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
210
Elongation at Break, % 8.5
49
Fatigue Strength, MPa 200
460
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
81
Shear Strength, MPa 410
640
Tensile Strength: Ultimate (UTS), MPa 700
900
Tensile Strength: Yield (Proof), MPa 610
480

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 210
1100
Melting Completion (Liquidus), °C 660
1480
Melting Onset (Solidus), °C 540
1430
Specific Heat Capacity, J/kg-K 910
460
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 110
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 31
37
Density, g/cm3 3.0
8.2
Embodied Carbon, kg CO2/kg material 8.6
6.5
Embodied Energy, MJ/kg 160
89
Embodied Water, L/kg 1470
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
370
Resilience: Unit (Modulus of Resilience), kJ/m3 2640
550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 65
31
Strength to Weight: Bending, points 59
25
Thermal Diffusivity, mm2/s 49
3.2
Thermal Shock Resistance, points 31
19

Alloy Composition

Aluminum (Al), % 91.3 to 94.9
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 3.9 to 4.6
1.0 to 2.0
Iron (Fe), % 0 to 0.15
35.7 to 45.7
Lithium (Li), % 0.7 to 1.5
0
Magnesium (Mg), % 0.25 to 0.8
0
Manganese (Mn), % 0 to 0.25
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 to 0.12
0 to 0.7
Silver (Ag), % 0.25 to 0.6
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
1.5 to 2.5
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.18
0
Residuals, % 0 to 0.15
0