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308.0 Aluminum vs. EN 1.4325 Stainless Steel

308.0 aluminum belongs to the aluminum alloys classification, while EN 1.4325 stainless steel belongs to the iron alloys. There are 31 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 308.0 aluminum and the bottom bar is EN 1.4325 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
180
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 2.0
45
Fatigue Strength, MPa 89
190
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 150
450
Tensile Strength: Ultimate (UTS), MPa 190
650
Tensile Strength: Yield (Proof), MPa 110
210

Thermal Properties

Latent Heat of Fusion, J/g 470
290
Maximum Temperature: Mechanical, °C 170
930
Melting Completion (Liquidus), °C 620
1430
Melting Onset (Solidus), °C 540
1380
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 140
16
Thermal Expansion, µm/m-K 20
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.7
3.0
Embodied Energy, MJ/kg 140
42
Embodied Water, L/kg 1080
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3
230
Resilience: Unit (Modulus of Resilience), kJ/m3 83
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 18
23
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 55
4.3
Thermal Shock Resistance, points 9.2
15

Alloy Composition

Aluminum (Al), % 85.7 to 91
0
Carbon (C), % 0
0.030 to 0.15
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 1.0
67.8 to 75
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 2.0
Nickel (Ni), % 0
8.0 to 10
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 5.0 to 6.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0