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7076 Aluminum vs. EN 1.6957 Steel

7076 aluminum belongs to the aluminum alloys classification, while EN 1.6957 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 7076 aluminum and the bottom bar is EN 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
280
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2
18
Fatigue Strength, MPa 170
530
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 310
570
Tensile Strength: Ultimate (UTS), MPa 530
930
Tensile Strength: Yield (Proof), MPa 460
780

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 170
450
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 460
1420
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 140
47
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 100
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
5.0
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.0
2.1
Embodied Energy, MJ/kg 150
29
Embodied Water, L/kg 1110
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
160
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
1630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 49
33
Strength to Weight: Bending, points 48
27
Thermal Diffusivity, mm2/s 54
13
Thermal Shock Resistance, points 23
27

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0
Carbon (C), % 0
0.22 to 0.32
Chromium (Cr), % 0
1.2 to 1.8
Copper (Cu), % 0.3 to 1.0
0
Iron (Fe), % 0 to 0.6
92.7 to 94.7
Magnesium (Mg), % 1.2 to 2.0
0
Manganese (Mn), % 0.3 to 0.8
0.15 to 0.4
Molybdenum (Mo), % 0
0.25 to 0.45
Nickel (Ni), % 0
3.4 to 4.0
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.4
0 to 0.15
Sulfur (S), % 0
0 to 0.0070
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 7.0 to 8.0
0
Residuals, % 0 to 0.15
0