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3004 Aluminum vs. S35045 Stainless Steel

3004 aluminum belongs to the aluminum alloys classification, while S35045 stainless steel belongs to the iron alloys. There are 30 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 3004 aluminum and the bottom bar is S35045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 19
39
Fatigue Strength, MPa 55 to 120
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Shear Strength, MPa 100 to 180
370
Tensile Strength: Ultimate (UTS), MPa 170 to 310
540
Tensile Strength: Yield (Proof), MPa 68 to 270
190

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 650
1390
Melting Onset (Solidus), °C 630
1340
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
12
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
34
Density, g/cm3 2.8
8.0
Embodied Carbon, kg CO2/kg material 8.3
5.8
Embodied Energy, MJ/kg 150
83
Embodied Water, L/kg 1180
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
170
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 18 to 31
19
Strength to Weight: Bending, points 25 to 37
19
Thermal Diffusivity, mm2/s 65
3.2
Thermal Shock Resistance, points 7.6 to 13
12

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0.15 to 0.6
Carbon (C), % 0
0.060 to 0.1
Chromium (Cr), % 0
25 to 29
Copper (Cu), % 0 to 0.25
0 to 0.75
Iron (Fe), % 0 to 0.7
29.4 to 42.6
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0 to 1.5
Nickel (Ni), % 0
32 to 37
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0