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A201.0 Aluminum vs. AISI 204 Stainless Steel

A201.0 aluminum belongs to the aluminum alloys classification, while AISI 204 stainless steel belongs to the iron alloys. There are 29 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 A201.0 aluminum and the bottom bar is AISI 204 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 4.7
23 to 39
Fatigue Strength, MPa 97
320 to 720
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 480
730 to 1100
Tensile Strength: Yield (Proof), MPa 420
380 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 170
850
Melting Completion (Liquidus), °C 650
1410
Melting Onset (Solidus), °C 570
1370
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.1
2.4
Embodied Energy, MJ/kg 150
35
Embodied Water, L/kg 1150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
240 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
360 to 2940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 44
27 to 40
Strength to Weight: Bending, points 45
24 to 31
Thermal Diffusivity, mm2/s 46
4.1
Thermal Shock Resistance, points 21
16 to 24

Alloy Composition

Aluminum (Al), % 93.7 to 95.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 0.1
69.6 to 76.4
Magnesium (Mg), % 0.15 to 0.35
0
Manganese (Mn), % 0.2 to 0.4
7.0 to 9.0
Nickel (Ni), % 0
1.5 to 3.0
Nitrogen (N), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.15 to 0.35
0
Residuals, % 0 to 0.1
0