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EN 1.4981 Stainless Steel vs. 1100 Aluminum

EN 1.4981 stainless steel belongs to the iron alloys classification, while 1100 aluminum belongs to the aluminum alloys. There are 30 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 EN 1.4981 stainless steel and the bottom bar is 1100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 39
1.1 to 32
Fatigue Strength, MPa 210
32 to 71
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 420
54 to 95
Tensile Strength: Ultimate (UTS), MPa 610
86 to 170
Tensile Strength: Yield (Proof), MPa 240
28 to 150

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 940
180
Melting Completion (Liquidus), °C 1440
660
Melting Onset (Solidus), °C 1400
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 16
220
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
59
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
190

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.0
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.2
Embodied Energy, MJ/kg 67
150
Embodied Water, L/kg 150
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
0.76 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 150
5.7 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 21
8.7 to 17
Strength to Weight: Bending, points 20
16 to 25
Thermal Diffusivity, mm2/s 4.3
90
Thermal Shock Resistance, points 14
3.7 to 7.4

Alloy Composition

Aluminum (Al), % 0
99 to 99.95
Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
0.050 to 0.2
Iron (Fe), % 59.6 to 66.7
0 to 1.0
Manganese (Mn), % 0 to 1.5
0 to 0.050
Molybdenum (Mo), % 1.6 to 2.0
0
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15