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3105 Aluminum vs. S46910 Stainless Steel

3105 aluminum belongs to the aluminum alloys classification, while S46910 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 3105 aluminum and the bottom bar is S46910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 29 to 67
270 to 630
Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 1.1 to 20
2.2 to 11
Fatigue Strength, MPa 39 to 95
250 to 1020
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 77 to 140
410 to 1410
Tensile Strength: Ultimate (UTS), MPa 120 to 240
680 to 2470
Tensile Strength: Yield (Proof), MPa 46 to 220
450 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 180
810
Melting Completion (Liquidus), °C 660
1460
Melting Onset (Solidus), °C 640
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Expansion, µm/m-K 24
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.2
4.1
Embodied Energy, MJ/kg 150
55
Embodied Water, L/kg 1180
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
48 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
510 to 4780
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 12 to 24
24 to 86
Strength to Weight: Bending, points 20 to 31
22 to 51
Thermal Shock Resistance, points 5.2 to 11
23 to 84

Alloy Composition

Aluminum (Al), % 96 to 99.5
0.15 to 0.5
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.2
11 to 13
Copper (Cu), % 0 to 0.3
1.5 to 3.5
Iron (Fe), % 0 to 0.7
65 to 76
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 0
8.0 to 10
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0.5 to 1.2
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0 to 0.15
0

Comparable Variants