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3004 Aluminum vs. S17400 Stainless Steel

3004 aluminum belongs to the aluminum alloys classification, while S17400 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (6, 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 S17400 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 83
280 to 440
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.1 to 19
11 to 21
Fatigue Strength, MPa 55 to 120
380 to 670
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 100 to 180
570 to 830
Tensile Strength: Ultimate (UTS), MPa 170 to 310
910 to 1390
Tensile Strength: Yield (Proof), MPa 68 to 270
580 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 180
850
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 630
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
17
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1180
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
880 to 4060
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 18 to 31
32 to 49
Strength to Weight: Bending, points 25 to 37
27 to 35
Thermal Diffusivity, mm2/s 65
4.5
Thermal Shock Resistance, points 7.6 to 13
30 to 46

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 0 to 0.25
3.0 to 5.0
Iron (Fe), % 0 to 0.7
70.4 to 78.9
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0 to 1.0
Nickel (Ni), % 0
3.0 to 5.0
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0