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3004 Aluminum vs. N08700 Stainless Steel

3004 aluminum belongs to the aluminum alloys classification, while N08700 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, 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 N08700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 83
170
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 19
32
Fatigue Strength, MPa 55 to 120
210
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 100 to 180
410
Tensile Strength: Ultimate (UTS), MPa 170 to 310
620
Tensile Strength: Yield (Proof), MPa 68 to 270
270

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 630
1400
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
13
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 140
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
32
Density, g/cm3 2.8
8.1
Embodied Carbon, kg CO2/kg material 8.3
6.0
Embodied Energy, MJ/kg 150
82
Embodied Water, L/kg 1180
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
160
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 18 to 31
21
Strength to Weight: Bending, points 25 to 37
20
Thermal Diffusivity, mm2/s 65
3.5
Thermal Shock Resistance, points 7.6 to 13
14

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 0 to 0.7
42 to 52.7
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
4.3 to 5.0
Nickel (Ni), % 0
24 to 26
Niobium (Nb), % 0
0 to 0.4
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