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3104 Aluminum vs. N08020 Stainless Steel

3104 aluminum belongs to the aluminum alloys classification, while N08020 stainless steel belongs to the iron alloys. There are 30 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 3104 aluminum and the bottom bar is N08020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 20
15 to 34
Fatigue Strength, MPa 74 to 130
210 to 240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 110 to 180
380 to 410
Tensile Strength: Ultimate (UTS), MPa 170 to 310
610 to 620
Tensile Strength: Yield (Proof), MPa 68 to 270
270 to 420

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 650
1410
Melting Onset (Solidus), °C 600
1360
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 160
12
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.8
8.2
Embodied Carbon, kg CO2/kg material 8.4
6.6
Embodied Energy, MJ/kg 150
92
Embodied Water, L/kg 1180
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.6 to 60
83 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 34 to 540
180 to 440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 17 to 31
21
Strength to Weight: Bending, points 25 to 37
20
Thermal Diffusivity, mm2/s 64
3.2
Thermal Shock Resistance, points 7.6 to 13
15

Alloy Composition

Aluminum (Al), % 95.1 to 98.4
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0.050 to 0.25
3.0 to 4.0
Gallium (Ga), % 0 to 0.050
0
Iron (Fe), % 0 to 0.8
29.9 to 44
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 0.8 to 1.4
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
32 to 38
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants