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A206.0 Aluminum vs. S17700 Stainless Steel

A206.0 aluminum belongs to the aluminum alloys classification, while S17700 stainless steel belongs to the iron 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 A206.0 aluminum and the bottom bar is S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
180 to 430
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 4.2 to 10
1.0 to 23
Fatigue Strength, MPa 90 to 180
290 to 560
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 260
740 to 940
Tensile Strength: Ultimate (UTS), MPa 390 to 440
1180 to 1650
Tensile Strength: Yield (Proof), MPa 250 to 380
430 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 170
890
Melting Completion (Liquidus), °C 670
1440
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.0
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1150
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 37
15 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1000
460 to 3750
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 36 to 41
42 to 59
Strength to Weight: Bending, points 39 to 43
32 to 40
Thermal Diffusivity, mm2/s 48
4.1
Thermal Shock Resistance, points 17 to 19
39 to 54

Alloy Composition

Aluminum (Al), % 93.9 to 95.7
0.75 to 1.5
Carbon (C), % 0
0 to 0.090
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 4.2 to 5.0
0
Iron (Fe), % 0 to 0.1
70.5 to 76.8
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.2
0 to 1.0
Nickel (Ni), % 0 to 0.050
6.5 to 7.8
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0