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EN 1.4887 Stainless Steel vs. 5088 Aluminum

EN 1.4887 stainless steel belongs to the iron alloys classification, while 5088 aluminum belongs to the aluminum 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 EN 1.4887 stainless steel and the bottom bar is 5088 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 45
29
Fatigue Strength, MPa 280
180
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
25
Shear Strength, MPa 400
200
Tensile Strength: Ultimate (UTS), MPa 580
310
Tensile Strength: Yield (Proof), MPa 300
150

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Maximum Temperature: Mechanical, °C 1100
200
Melting Completion (Liquidus), °C 1390
640
Melting Onset (Solidus), °C 1350
540
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 12
120
Thermal Expansion, µm/m-K 15
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
29
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
98

Otherwise Unclassified Properties

Base Metal Price, % relative 39
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 6.7
9.0
Embodied Energy, MJ/kg 96
150
Embodied Water, L/kg 210
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
76
Resilience: Unit (Modulus of Resilience), kJ/m3 230
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 20
32
Strength to Weight: Bending, points 19
38
Thermal Diffusivity, mm2/s 3.2
51
Thermal Shock Resistance, points 14
14

Alloy Composition

Aluminum (Al), % 0
92.4 to 94.8
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 20 to 23
0 to 0.15
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 34.2 to 45
0.1 to 0.35
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0 to 2.0
0.2 to 0.5
Nickel (Ni), % 33 to 37
0
Niobium (Nb), % 1.0 to 1.5
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 2.0
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0.2 to 0.4
Zirconium (Zr), % 0
0 to 0.15
Residuals, % 0
0 to 0.15