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7076 Aluminum vs. S21460 Stainless Steel

7076 aluminum belongs to the aluminum alloys classification, while S21460 stainless steel belongs to the iron alloys. There are 27 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 7076 aluminum and the bottom bar is S21460 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
250
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.2
46
Fatigue Strength, MPa 170
390
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 310
580
Tensile Strength: Ultimate (UTS), MPa 530
830
Tensile Strength: Yield (Proof), MPa 460
430

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Maximum Temperature: Mechanical, °C 170
920
Melting Completion (Liquidus), °C 630
1380
Melting Onset (Solidus), °C 460
1330
Specific Heat Capacity, J/kg-K 860
480
Thermal Expansion, µm/m-K 24
18

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 3.0
7.6
Embodied Carbon, kg CO2/kg material 8.0
3.0
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
320
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 49
30
Strength to Weight: Bending, points 48
26
Thermal Shock Resistance, points 23
17

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0
Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.3 to 1.0
0
Iron (Fe), % 0 to 0.6
57.3 to 63.7
Magnesium (Mg), % 1.2 to 2.0
0
Manganese (Mn), % 0.3 to 0.8
14 to 16
Nickel (Ni), % 0
5.0 to 6.0
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 7.0 to 8.0
0
Residuals, % 0 to 0.15
0