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EN 1.4547 Stainless Steel vs. 1070A Aluminum

EN 1.4547 stainless steel belongs to the iron alloys classification, while 1070A aluminum belongs to the aluminum alloys. There are 31 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 EN 1.4547 stainless steel and the bottom bar is 1070A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 39
2.3 to 33
Fatigue Strength, MPa 290
17 to 51
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Shear Strength, MPa 510
44 to 81
Tensile Strength: Ultimate (UTS), MPa 750
68 to 140
Tensile Strength: Yield (Proof), MPa 340
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1470
640
Melting Onset (Solidus), °C 1420
640
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 14
230
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
60
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
200

Otherwise Unclassified Properties

Base Metal Price, % relative 28
9.0
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.6
8.2
Embodied Energy, MJ/kg 75
150
Embodied Water, L/kg 190
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
3.0 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 290
2.1 to 100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 26
7.0 to 14
Strength to Weight: Bending, points 23
14 to 22
Thermal Diffusivity, mm2/s 3.8
94
Thermal Shock Resistance, points 16
3.1 to 6.3

Alloy Composition

Aluminum (Al), % 0
99.7 to 100
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
0 to 0.030
Iron (Fe), % 51 to 56.3
0 to 0.25
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 18.5
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.7
0 to 0.2
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0
0 to 0.070