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S17700 Stainless Steel vs. 336.0 Aluminum

S17700 stainless steel belongs to the iron alloys classification, while 336.0 aluminum belongs to the aluminum 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 S17700 stainless steel and the bottom bar is 336.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 430
110 to 130
Elastic (Young's, Tensile) Modulus, GPa 200
75
Elongation at Break, % 1.0 to 23
0.5
Fatigue Strength, MPa 290 to 560
80 to 93
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
28
Shear Strength, MPa 740 to 940
190 to 250
Tensile Strength: Ultimate (UTS), MPa 1180 to 1650
250 to 320
Tensile Strength: Yield (Proof), MPa 430 to 1210
190 to 300

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Maximum Temperature: Mechanical, °C 890
210
Melting Completion (Liquidus), °C 1440
570
Melting Onset (Solidus), °C 1400
540
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 11
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
95

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.7
2.8
Embodied Carbon, kg CO2/kg material 2.8
7.9
Embodied Energy, MJ/kg 40
140
Embodied Water, L/kg 150
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 210
1.1 to 1.6
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3750
250 to 580
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 42 to 59
25 to 32
Strength to Weight: Bending, points 32 to 40
32 to 38
Thermal Diffusivity, mm2/s 4.1
48
Thermal Shock Resistance, points 39 to 54
12 to 16

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
79.1 to 85.8
Carbon (C), % 0 to 0.090
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 70.5 to 76.8
0 to 1.2
Magnesium (Mg), % 0
0.7 to 1.3
Manganese (Mn), % 0 to 1.0
0 to 0.35
Nickel (Ni), % 6.5 to 7.8
2.0 to 3.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
11 to 13
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35