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1100A Aluminum vs. AISI 321H Stainless Steel

1100A aluminum belongs to the aluminum alloys classification, while AISI 321H stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 321H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 4.5 to 34
40
Fatigue Strength, MPa 35 to 74
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 59 to 99
400
Tensile Strength: Ultimate (UTS), MPa 89 to 170
580
Tensile Strength: Yield (Proof), MPa 29 to 150
230

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 170
940
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 640
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
15
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
16
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.2
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1190
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.4 to 23
190
Resilience: Unit (Modulus of Resilience), kJ/m3 5.9 to 150
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 9.1 to 17
21
Strength to Weight: Bending, points 16 to 25
20
Thermal Diffusivity, mm2/s 93
4.0
Thermal Shock Resistance, points 4.0 to 7.6
12

Alloy Composition

Aluminum (Al), % 99 to 100
0
Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.050 to 0.2
0
Iron (Fe), % 0 to 1.0
65.4 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 12
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 to 0.7
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0