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2117 Aluminum vs. EN 1.4854 Stainless Steel

2117 aluminum belongs to the aluminum alloys classification, while EN 1.4854 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 2117 aluminum and the bottom bar is EN 1.4854 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
180
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 26
45
Fatigue Strength, MPa 95
310
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
78
Shear Strength, MPa 200
520
Tensile Strength: Ultimate (UTS), MPa 300
750
Tensile Strength: Yield (Proof), MPa 170
340

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 220
1170
Melting Completion (Liquidus), °C 650
1370
Melting Onset (Solidus), °C 550
1330
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 150
11
Thermal Expansion, µm/m-K 24
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 10
34
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.2
5.7
Embodied Energy, MJ/kg 150
81
Embodied Water, L/kg 1150
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
270
Resilience: Unit (Modulus of Resilience), kJ/m3 190
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 28
26
Strength to Weight: Bending, points 33
23
Thermal Diffusivity, mm2/s 59
2.9
Thermal Shock Resistance, points 12
18

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Carbon (C), % 0
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0 to 0.1
24 to 26
Copper (Cu), % 2.2 to 4.5
0
Iron (Fe), % 0 to 0.7
33.6 to 40.6
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0 to 2.0
Nickel (Ni), % 0
34 to 36
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 0.8
1.2 to 2.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0