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296.0 Aluminum vs. AISI 316LN Stainless Steel

296.0 aluminum belongs to the aluminum alloys classification, while AISI 316LN stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 296.0 aluminum and the bottom bar is AISI 316LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
180
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 3.2 to 7.1
42
Fatigue Strength, MPa 47 to 70
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
82
Tensile Strength: Ultimate (UTS), MPa 260 to 270
590
Tensile Strength: Yield (Proof), MPa 120 to 180
230

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 170
940
Melting Completion (Liquidus), °C 630
1450
Melting Onset (Solidus), °C 540
1380
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130 to 150
15
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 37
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 99 to 110
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
19
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 7.8
3.8
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1110
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 15
200
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 220
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 24 to 25
21
Strength to Weight: Bending, points 30 to 31
20
Thermal Diffusivity, mm2/s 51 to 56
4.1
Thermal Shock Resistance, points 12
13

Alloy Composition

Aluminum (Al), % 89 to 94
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 1.2
62 to 71.9
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.35
10 to 14
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 2.0 to 3.0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.35
0