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AISI 440A Stainless Steel vs. 6025 Aluminum

AISI 440A stainless steel belongs to the iron alloys classification, while 6025 aluminum belongs to the aluminum alloys. There are 29 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 440A stainless steel and the bottom bar is 6025 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 5.0 to 20
2.8 to 10
Fatigue Strength, MPa 270 to 790
67 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 450 to 1040
110 to 140
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
190 to 240
Tensile Strength: Yield (Proof), MPa 420 to 1650
68 to 210

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 760
160
Melting Completion (Liquidus), °C 1480
650
Melting Onset (Solidus), °C 1370
550
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 23
130
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
33
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.5
Density, g/cm3 7.7
2.8
Embodied Carbon, kg CO2/kg material 2.2
8.5
Embodied Energy, MJ/kg 31
150
Embodied Water, L/kg 120
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
6.0 to 15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 26 to 65
19 to 24
Strength to Weight: Bending, points 23 to 43
26 to 31
Thermal Diffusivity, mm2/s 6.2
54
Thermal Shock Resistance, points 26 to 65
8.2 to 10

Alloy Composition

Aluminum (Al), % 0
91.7 to 96.3
Carbon (C), % 0.6 to 0.75
0
Chromium (Cr), % 16 to 18
0 to 0.2
Copper (Cu), % 0
0.2 to 0.7
Iron (Fe), % 78.4 to 83.4
0 to 0.7
Magnesium (Mg), % 0
2.1 to 3.0
Manganese (Mn), % 0 to 1.0
0.6 to 1.4
Molybdenum (Mo), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.8 to 1.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.15

Comparable Variants