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AISI 304Cu Stainless Steel vs. 444.0 Aluminum

AISI 304Cu stainless steel belongs to the iron alloys classification, while 444.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 AISI 304Cu stainless steel and the bottom bar is 444.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
50
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 45
25
Fatigue Strength, MPa 190
51
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 530
190
Tensile Strength: Yield (Proof), MPa 210
83

Thermal Properties

Latent Heat of Fusion, J/g 290
500
Maximum Temperature: Mechanical, °C 930
170
Melting Completion (Liquidus), °C 1410
610
Melting Onset (Solidus), °C 1370
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
160
Thermal Expansion, µm/m-K 16
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
140

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 3.0
7.9
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
39
Resilience: Unit (Modulus of Resilience), kJ/m3 110
49
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
28
Thermal Diffusivity, mm2/s 3.5
67
Thermal Shock Resistance, points 12
8.8

Alloy Composition

Aluminum (Al), % 0
90.5 to 93.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 3.0 to 4.0
0 to 0.25
Iron (Fe), % 63.9 to 72
0 to 0.6
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.35
Nickel (Ni), % 8.0 to 10
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
6.5 to 7.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15