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S17700 Stainless Steel vs. 6012 Aluminum

S17700 stainless steel belongs to the iron alloys classification, while 6012 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 S17700 stainless steel and the bottom bar is 6012 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 1.0 to 23
9.1 to 11
Fatigue Strength, MPa 290 to 560
55 to 100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 740 to 940
130 to 190
Tensile Strength: Ultimate (UTS), MPa 1180 to 1650
220 to 320
Tensile Strength: Yield (Proof), MPa 430 to 1210
110 to 260

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 890
170
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 15
160
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
45
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
140

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.7
2.9
Embodied Carbon, kg CO2/kg material 2.8
8.2
Embodied Energy, MJ/kg 40
150
Embodied Water, L/kg 150
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 210
21 to 28
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3750
94 to 480
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
48
Strength to Weight: Axial, points 42 to 59
22 to 32
Strength to Weight: Bending, points 32 to 40
29 to 37
Thermal Diffusivity, mm2/s 4.1
62
Thermal Shock Resistance, points 39 to 54
10 to 14

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
92.2 to 98
Bismuth (Bi), % 0
0 to 0.7
Carbon (C), % 0 to 0.090
0
Chromium (Cr), % 16 to 18
0 to 0.3
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 70.5 to 76.8
0 to 0.5
Lead (Pb), % 0
0.4 to 2.0
Magnesium (Mg), % 0
0.6 to 1.2
Manganese (Mn), % 0 to 1.0
0.4 to 1.0
Nickel (Ni), % 6.5 to 7.8
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.6 to 1.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15