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AISI 304 Stainless Steel vs. 1050A Aluminum

AISI 304 stainless steel belongs to the iron alloys classification, while 1050A 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 AISI 304 stainless steel and the bottom bar is 1050A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 360
20 to 45
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 8.0 to 43
1.1 to 33
Fatigue Strength, MPa 210 to 440
22 to 55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 400 to 690
44 to 97
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
68 to 170
Tensile Strength: Yield (Proof), MPa 230 to 860
22 to 150

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 710
170
Melting Completion (Liquidus), °C 1450
660
Melting Onset (Solidus), °C 1400
650
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
230
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
59
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
200

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.0
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.0
8.2
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 150
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
1.9 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
3.7 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 21 to 42
6.9 to 18
Strength to Weight: Bending, points 20 to 32
14 to 25
Thermal Diffusivity, mm2/s 4.2
94
Thermal Shock Resistance, points 12 to 25
3.0 to 7.6

Alloy Composition

Aluminum (Al), % 0
99.5 to 100
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 66.5 to 74
0 to 0.4
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.050
Nickel (Ni), % 8.0 to 10.5
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.070

Comparable Variants