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1070A Aluminum vs. EN 1.4911 Stainless Steel

1070A aluminum belongs to the aluminum alloys classification, while EN 1.4911 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1070A aluminum and the bottom bar is EN 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 2.3 to 33
11
Fatigue Strength, MPa 17 to 51
530
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 44 to 81
640
Tensile Strength: Ultimate (UTS), MPa 68 to 140
1070
Tensile Strength: Yield (Proof), MPa 17 to 120
970

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 170
700
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 640
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
20
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 200
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
20
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.2
3.4
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1200
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.0 to 18
120
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
2410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 7.0 to 14
38
Strength to Weight: Bending, points 14 to 22
30
Thermal Diffusivity, mm2/s 94
5.4
Thermal Shock Resistance, points 3.1 to 6.3
37

Alloy Composition

Aluminum (Al), % 99.7 to 100
0
Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0
0.050 to 0.12
Chromium (Cr), % 0
9.8 to 11.2
Cobalt (Co), % 0
5.0 to 7.0
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.25
75.7 to 83.8
Magnesium (Mg), % 0 to 0.030
0
Manganese (Mn), % 0 to 0.030
0.3 to 1.3
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 0
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.2
0.1 to 0.8
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.030
0
Tungsten (W), % 0
0 to 0.7
Vanadium (V), % 0
0.1 to 0.4
Zinc (Zn), % 0 to 0.070
0