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EN 1.4938 Stainless Steel vs. 383.0 Aluminum

EN 1.4938 stainless steel belongs to the iron alloys classification, while 383.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 EN 1.4938 stainless steel and the bottom bar is 383.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 16 to 17
3.5
Fatigue Strength, MPa 390 to 520
150
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
28
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
280
Tensile Strength: Yield (Proof), MPa 640 to 870
150

Thermal Properties

Latent Heat of Fusion, J/g 270
540
Maximum Temperature: Mechanical, °C 750
170
Melting Completion (Liquidus), °C 1460
580
Melting Onset (Solidus), °C 1420
540
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 30
96
Thermal Expansion, µm/m-K 11
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
23
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
74

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 3.3
7.5
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 110
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
150
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 31 to 37
28
Strength to Weight: Bending, points 26 to 29
34
Thermal Diffusivity, mm2/s 8.1
39
Thermal Shock Resistance, points 30 to 35
13

Alloy Composition

Aluminum (Al), % 0
79.7 to 88.5
Carbon (C), % 0.080 to 0.15
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 0
2.0 to 3.0
Iron (Fe), % 80.5 to 84.8
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.4 to 0.9
0 to 0.5
Molybdenum (Mo), % 1.5 to 2.0
0
Nickel (Ni), % 2.0 to 3.0
0 to 0.3
Nitrogen (N), % 0.020 to 0.040
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
9.5 to 11.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.15
Vanadium (V), % 0.25 to 0.4
0
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.5