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1050A Aluminum vs. EN 1.4901 Stainless Steel

1050A aluminum belongs to the aluminum alloys classification, while EN 1.4901 stainless steel belongs to the iron 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 1050A aluminum and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 33
19
Fatigue Strength, MPa 22 to 55
310
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 44 to 97
460
Tensile Strength: Ultimate (UTS), MPa 68 to 170
740
Tensile Strength: Yield (Proof), MPa 22 to 150
490

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Maximum Temperature: Mechanical, °C 170
650
Melting Completion (Liquidus), °C 660
1490
Melting Onset (Solidus), °C 650
1450
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
26
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 59
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 200
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.2
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1200
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.9 to 19
120
Resilience: Unit (Modulus of Resilience), kJ/m3 3.7 to 160
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 6.9 to 18
26
Strength to Weight: Bending, points 14 to 25
23
Thermal Diffusivity, mm2/s 94
6.9
Thermal Shock Resistance, points 3.0 to 7.6
23

Alloy Composition

Aluminum (Al), % 99.5 to 100
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.4
85.8 to 89.1
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.050
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 0 to 0.070
0
Zirconium (Zr), % 0
0 to 0.010