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1100A Aluminum vs. AISI 347 Stainless Steel

1100A aluminum belongs to the aluminum alloys classification, while AISI 347 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 1100A aluminum and the bottom bar is AISI 347 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 4.5 to 34
34 to 46
Fatigue Strength, MPa 35 to 74
220 to 270
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 59 to 99
430 to 460
Tensile Strength: Ultimate (UTS), MPa 89 to 170
610 to 690
Tensile Strength: Yield (Proof), MPa 29 to 150
240 to 350

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 640
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
16
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 200
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
19
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.6
Embodied Energy, MJ/kg 150
52
Embodied Water, L/kg 1190
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.4 to 23
190 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 5.9 to 150
150 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 9.1 to 17
22 to 25
Strength to Weight: Bending, points 16 to 25
20 to 22
Thermal Diffusivity, mm2/s 93
4.3
Thermal Shock Resistance, points 4.0 to 7.6
13 to 15

Alloy Composition

Aluminum (Al), % 99 to 100
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.050 to 0.2
0
Iron (Fe), % 0 to 1.0
64.1 to 74
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.050
0 to 2.0
Nickel (Ni), % 0
9.0 to 13
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0