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S31060 Stainless Steel vs. 7005 Aluminum

S31060 stainless steel belongs to the iron alloys classification, while 7005 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 S31060 stainless steel and the bottom bar is 7005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 46
10 to 20
Fatigue Strength, MPa 290
100 to 190
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 78
26
Shear Strength, MPa 480
120 to 230
Tensile Strength: Ultimate (UTS), MPa 680
200 to 400
Tensile Strength: Yield (Proof), MPa 310
95 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Maximum Temperature: Mechanical, °C 1080
200
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1370
610
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 15
140 to 170
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
35 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
110 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.5
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 3.4
8.3
Embodied Energy, MJ/kg 48
150
Embodied Water, L/kg 170
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
32 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 250
65 to 850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 24
19 to 38
Strength to Weight: Bending, points 22
26 to 41
Thermal Diffusivity, mm2/s 4.0
54 to 65
Thermal Shock Resistance, points 15
8.7 to 18

Alloy Composition

Aluminum (Al), % 0
91 to 94.7
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0.050 to 0.1
0
Cerium (Ce), % 0 to 0.070
0
Chromium (Cr), % 22 to 24
0.060 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 61.4 to 67.8
0 to 0.4
Lanthanum (La), % 0 to 0.070
0
Magnesium (Mg), % 0
1.0 to 1.8
Manganese (Mn), % 0 to 1.0
0.2 to 0.7
Nickel (Ni), % 10 to 12.5
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0 to 0.35
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.010 to 0.060
Zinc (Zn), % 0
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.15