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8079 Aluminum vs. EN 1.4988 Stainless Steel

8079 aluminum belongs to the aluminum alloys classification, while EN 1.4988 stainless steel belongs to the iron alloys. There are 29 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 8079 aluminum and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 2.2
34
Fatigue Strength, MPa 56
230
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 150
640
Tensile Strength: Yield (Proof), MPa 120
290

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 170
920
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 640
1400
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 190
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
23
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.2
6.0
Embodied Energy, MJ/kg 150
89
Embodied Water, L/kg 1180
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1
180
Resilience: Unit (Modulus of Resilience), kJ/m3 110
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 15
23
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 92
4.0
Thermal Shock Resistance, points 6.4
14

Alloy Composition

Aluminum (Al), % 98.1 to 99.3
0
Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0.7 to 1.3
62.1 to 69.5
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
1.1 to 1.5
Nickel (Ni), % 0
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.050 to 0.3
0.3 to 0.6
Sulfur (S), % 0
0 to 0.015
Vanadium (V), % 0
0.6 to 0.85
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0