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380.0 Aluminum vs. AISI 204 Stainless Steel

380.0 aluminum belongs to the aluminum alloys classification, while AISI 204 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 380.0 aluminum and the bottom bar is AISI 204 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
210 to 330
Elastic (Young's, Tensile) Modulus, GPa 74
200
Elongation at Break, % 3.0
23 to 39
Fatigue Strength, MPa 140
320 to 720
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Shear Strength, MPa 190
500 to 700
Tensile Strength: Ultimate (UTS), MPa 320
730 to 1100
Tensile Strength: Yield (Proof), MPa 160
380 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 510
280
Maximum Temperature: Mechanical, °C 170
850
Melting Completion (Liquidus), °C 590
1410
Melting Onset (Solidus), °C 540
1370
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 100
15
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 83
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 7.5
2.4
Embodied Energy, MJ/kg 140
35
Embodied Water, L/kg 1040
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.0
240 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 170
360 to 2940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 31
27 to 40
Strength to Weight: Bending, points 36
24 to 31
Thermal Diffusivity, mm2/s 40
4.1
Thermal Shock Resistance, points 14
16 to 24

Alloy Composition

Aluminum (Al), % 79.6 to 89.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 2.0
69.6 to 76.4
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
7.0 to 9.0
Nickel (Ni), % 0 to 0.5
1.5 to 3.0
Nitrogen (N), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 7.5 to 9.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0